Version 0.14.0

Issue-488: warning for missing enumeration value

README.md

@@ -4,7 +4,7 @@ Very fast, header only, C++ logging library. [![Build Status](https://travis-ci.
 
 
 ## Install
-#### Just copy or clone the headers:
+#### Just copy the headers:
 
 * Copy the source [folder](https://github.com/gabime/spdlog/tree/master/include/spdlog) to your build tree and use a C++11 compiler.
 
@@ -14,6 +14,7 @@ Very fast, header only, C++ logging library. [![Build Status](https://travis-ci.
 * Homebrew: `brew install spdlog`
 * FreeBSD:  `cd /usr/ports/devel/spdlog/ && make install clean`
 * Fedora: `yum install spdlog`
+* Gentoo: `emerge dev-libs/spdlog`
 * Arch Linux: `pacman -S spdlog-git`
 * vcpkg: `vcpkg install spdlog`
  
@@ -24,12 +25,13 @@ Very fast, header only, C++ logging library. [![Build Status](https://travis-ci.
  * Mac OSX (clang 3.5+)
  * Android
 
-##Features
+## Features
 * Very fast - performance is the primary goal (see [benchmarks](#benchmarks) below).
 * Headers only, just copy and use.
 * Feature rich [call style](#usage-example) using the excellent [fmt](https://github.com/fmtlib/fmt) library.
 * Extremely fast asynchronous mode (optional) - using lockfree queues and other tricks to reach millions of calls/sec.
 * [Custom](https://github.com/gabime/spdlog/wiki/3.-Custom-formatting) formatting.
+* Conditional Logging
 * Multi/Single threaded loggers.
 * Various log targets:
     * Rotating log files.
@@ -91,6 +93,10 @@ int main(int, char*[])
         console->info("Welcome to spdlog!");
         console->error("Some error message with arg{}..", 1);
 
+	// Conditional logging example
+        auto i = 2;
+        console->warn_if(i != 0, "an important message");
+
         // Formatting examples
         console->warn("Easy padding in numbers like {:08d}", 12);
         console->critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
@@ -121,11 +127,11 @@ int main(int, char*[])
         rotating_logger->info("This is another message with custom format");
 
 
-		// Runtime log levels
-		spd::set_level(spd::level::info); //Set global log level to info
-		console->debug("This message shold not be displayed!");
-		console->set_level(spd::level::debug); // Set specific logger's log level
-		console->debug("This message shold be displayed..");
+        // Runtime log levels
+	spd::set_level(spd::level::info); //Set global log level to info
+	console->debug("This message shold not be displayed!");
+	console->set_level(spd::level::debug); // Set specific logger's log level
+	console->debug("This message shold be displayed..");
 
         // Compile time log levels
         // define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
@@ -149,13 +155,13 @@ int main(int, char*[])
         err_handler_example();
 
         // Apply a function on all registered loggers
-        spd::apply_all([&](std::shared_ptr<spdlog::logger> l)
+        spd::apply_all([&](std::shared_ptr<spd::logger> l)
         {
             l->info("End of example.");
         });
 
         // Release and close all loggers
-        spdlog::drop_all();
+        spd::drop_all();
     }
     // Exceptions will only be thrown upon failed logger or sink construction (not during logging)
     catch (const spd::spdlog_ex& ex)
@@ -168,7 +174,7 @@ int main(int, char*[])
 void async_example()
 {
     size_t q_size = 4096; //queue size must be power of 2
-    spdlog::set_async_mode(q_size);
+    spd::set_async_mode(q_size);
     auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log.txt");
     for (int i = 0; i < 100; ++i)
         async_file->info("Async message #{}", i);
@@ -206,7 +212,7 @@ void user_defined_example()
 //
 void err_handler_example()
 {	
-	spdlog::set_error_handler([](const std::string& msg) {
+	spd::set_error_handler([](const std::string& msg) {
 		std::cerr << "my err handler: " << msg << std::endl;
 	}); 
 	// (or logger->set_error_handler(..) to set for specific logger)

example/example.cpp

@@ -6,6 +6,10 @@
 // spdlog usage example
 //
 //
+
+#define SPDLOG_TRACE_ON
+#define SPDLOG_DEBUG_ON
+
 #include "spdlog/spdlog.h"
 
 #include <iostream>
@@ -27,6 +31,9 @@ int main(int, char*[])
         console->info("Welcome to spdlog!");
         console->error("Some error message with arg{}..", 1);
 
+        // Conditional logging example
+        console->info_if(true, "Welcome to spdlog conditional logging!");
+
         // Formatting examples
         console->warn("Easy padding in numbers like {:08d}", 12);
         console->critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
@@ -34,12 +41,14 @@ int main(int, char*[])
         console->info("Positional args are {1} {0}..", "too", "supported");
         console->info("{:<30}", "left aligned");
 
+        SPDLOG_DEBUG_IF(console, true, "This is a debug log");
+
 
         spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function");
 
 
         // Create basic file logger (not rotated)
-        auto my_logger = spd::basic_logger_mt("basic_logger", "logs/basic.txt");
+        auto my_logger = spd::basic_logger_mt("basic_logger", "logs/basic");
         my_logger->info("Some log message");
 
         // Create a file rotating logger with 5mb size max and 3 rotated files
@@ -68,6 +77,8 @@ int main(int, char*[])
         // define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
         SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
         SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
+        SPDLOG_DEBUG_IF(console, true, "This is a debug log");
+
 
         // Asynchronous logging is very fast..
         // Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous..
@@ -106,7 +117,7 @@ void async_example()
 {
     size_t q_size = 4096; //queue size must be power of 2
     spdlog::set_async_mode(q_size);
-    auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log.txt");
+    auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log");
 
     for (int i = 0; i < 100; ++i)
         async_file->info("Async message #{}", i);
@@ -143,7 +154,7 @@ struct my_type
     }
 };
 
-#include <spdlog/fmt/ostr.h> // must be included
+#include "spdlog/fmt/ostr.h" // must be included
 void user_defined_example()
 {
     spd::get("console")->info("user defined type: {}", my_type { 14 });

include/spdlog/async_logger.h

@@ -15,8 +15,8 @@
 //    3. will throw spdlog_ex upon log exceptions
 // Upon destruction, logs all remaining messages in the queue before destructing..
 
-#include <spdlog/common.h>
-#include <spdlog/logger.h>
+#include "spdlog/common.h"
+#include "spdlog/logger.h"
 
 #include <chrono>
 #include <functional>
@@ -31,7 +31,7 @@ namespace details
 class async_log_helper;
 }
 
-class async_logger :public logger
+class async_logger SPDLOG_FINAL :public logger
 {
 public:
     template<class It>
@@ -61,12 +61,17 @@ public:
                  const std::function<void()>& worker_teardown_cb = nullptr);
 
     //Wait for the queue to be empty, and flush synchronously
-    //Warning: this can potentialy last forever as we wait it to complete
+    //Warning: this can potentially last forever as we wait it to complete
     void flush() override;
+
+    // Error handler
+    virtual void set_error_handler(log_err_handler) override;
+    virtual log_err_handler error_handler() override;
+
 protected:
     void _sink_it(details::log_msg& msg) override;
     void _set_formatter(spdlog::formatter_ptr msg_formatter) override;
-    void _set_pattern(const std::string& pattern) override;
+    void _set_pattern(const std::string& pattern, pattern_time_type pattern_time) override;
 
 private:
     std::unique_ptr<details::async_log_helper> _async_log_helper;
@@ -74,4 +79,4 @@ private:
 }
 
 
-#include <spdlog/details/async_logger_impl.h>
+#include "spdlog/details/async_logger_impl.h"

include/spdlog/common.h

@@ -18,7 +18,7 @@
 #include <locale>
 #endif
 
-#include <spdlog/details/null_mutex.h>
+#include "spdlog/details/null_mutex.h"
 
 //visual studio upto 2013 does not support noexcept nor constexpr
 #if defined(_MSC_VER) && (_MSC_VER < 1900)
@@ -29,6 +29,11 @@
 #define SPDLOG_CONSTEXPR constexpr
 #endif
 
+// See tweakme.h
+#if !defined(SPDLOG_FINAL)
+#define SPDLOG_FINAL
+#endif
+
 #if defined(__GNUC__)  || defined(__clang__)
 #define SPDLOG_DEPRECATED __attribute__((deprecated))
 #elif defined(_MSC_VER)
@@ -38,7 +43,7 @@
 #endif
 
 
-#include <spdlog/fmt/fmt.h>
+#include "spdlog/fmt/fmt.h"
 
 namespace spdlog
 {
@@ -76,7 +81,10 @@ typedef enum
     off = 6
 } level_enum;
 
-static const char* level_names[] { "trace", "debug", "info",  "warning", "error", "critical", "off" };
+#if !defined(SPDLOG_LEVEL_NAMES)
+#define SPDLOG_LEVEL_NAMES { "trace", "debug", "info",  "warning", "error", "critical", "off" };
+#endif
+static const char* level_names[] SPDLOG_LEVEL_NAMES
 
 static const char* short_level_names[] { "T", "D", "I", "W", "E", "C", "O" };
 
@@ -101,6 +109,15 @@ enum class async_overflow_policy
     discard_log_msg // Discard the message it enqueue fails
 };
 
+//
+// Pattern time - specific time getting to use for pattern_formatter.
+// local time by default
+//
+enum class pattern_time_type
+{
+    local, // log localtime
+    utc    // log utc
+};
 
 //
 // Log exception

include/spdlog/details/async_log_helper.h

@@ -9,17 +9,15 @@
 // If the internal queue of log messages reaches its max size,
 // then the client call will block until there is more room.
 //
-// If the back thread throws during logging, a spdlog::spdlog_ex exception
-// will be thrown in client's thread when tries to log the next message
 
 #pragma once
 
-#include <spdlog/common.h>
-#include <spdlog/sinks/sink.h>
-#include <spdlog/details/mpmc_bounded_q.h>
-#include <spdlog/details/log_msg.h>
-#include <spdlog/details/os.h>
-#include <spdlog/formatter.h>
+#include "spdlog/common.h"
+#include "spdlog/sinks/sink.h"
+#include "spdlog/details/mpmc_bounded_q.h"
+#include "spdlog/details/log_msg.h"
+#include "spdlog/details/os.h"
+#include "spdlog/formatter.h"
 
 #include <chrono>
 #include <exception>
@@ -53,6 +51,7 @@ class async_log_helper
         size_t thread_id;
         std::string txt;
         async_msg_type msg_type;
+        size_t msg_id;
 
         async_msg() = default;
         ~async_msg() = default;
@@ -62,11 +61,17 @@ async_msg(async_msg&& other) SPDLOG_NOEXCEPT:
         logger_name(std::move(other.logger_name)),
                     level(std::move(other.level)),
                     time(std::move(other.time)),
+                    thread_id(other.thread_id),
                     txt(std::move(other.txt)),
-                    msg_type(std::move(other.msg_type))
+                    msg_type(std::move(other.msg_type)),
+                    msg_id(other.msg_id)
         {}
 
-        async_msg(async_msg_type m_type) :msg_type(m_type)
+        async_msg(async_msg_type m_type):
+            level(level::info),
+            thread_id(0),
+            msg_type(m_type),
+            msg_id(0)
         {}
 
         async_msg& operator=(async_msg&& other) SPDLOG_NOEXCEPT
@@ -77,6 +82,7 @@ async_msg(async_msg&& other) SPDLOG_NOEXCEPT:
             thread_id = other.thread_id;
             txt = std::move(other.txt);
             msg_type = other.msg_type;
+            msg_id = other.msg_id;
             return *this;
         }
 
@@ -85,12 +91,13 @@ async_msg(async_msg&& other) SPDLOG_NOEXCEPT:
         async_msg& operator=(const async_msg& other) = delete;
 
         // construct from log_msg
-        async_msg(const details::log_msg& m) :
+        async_msg(const details::log_msg& m):
             level(m.level),
             time(m.time),
             thread_id(m.thread_id),
             txt(m.raw.data(), m.raw.size()),
-            msg_type(async_msg_type::log)
+            msg_type(async_msg_type::log),
+            msg_id(m.msg_id)
         {
 #ifndef SPDLOG_NO_NAME
             logger_name = *m.logger_name;
@@ -106,6 +113,7 @@ async_msg(async_msg&& other) SPDLOG_NOEXCEPT:
             msg.time = time;
             msg.thread_id = thread_id;
             msg.raw << txt;
+            msg.msg_id = msg_id;
         }
     };
 
@@ -135,6 +143,7 @@ public:
 
     void flush(bool wait_for_q);
 
+    void set_error_handler(spdlog::log_err_handler err_handler);
 
 private:
     formatter_ptr _formatter;
@@ -176,7 +185,7 @@ private:
 
     void handle_flush_interval(log_clock::time_point& now, log_clock::time_point& last_flush);
 
-    // sleep,yield or return immediatly using the time passed since last message as a hint
+    // sleep,yield or return immediately using the time passed since last message as a hint
     static void sleep_or_yield(const spdlog::log_clock::time_point& now, const log_clock::time_point& last_op_time);
 
     // wait until the queue is empty
@@ -221,7 +230,8 @@ inline spdlog::details::async_log_helper::~async_log_helper()
         _worker_thread.join();
     }
     catch (...) // don't crash in destructor
-    {}
+    {
+    }
 }
 
 
@@ -250,28 +260,34 @@ inline void spdlog::details::async_log_helper::push_msg(details::async_log_helpe
 inline void spdlog::details::async_log_helper::flush(bool wait_for_q)
 {
     push_msg(async_msg(async_msg_type::flush));
-    if(wait_for_q)
+    if (wait_for_q)
         wait_empty_q(); //return only make after the above flush message was processed
 }
 
 inline void spdlog::details::async_log_helper::worker_loop()
 {
-    try
+    if (_worker_warmup_cb) _worker_warmup_cb();
+    auto last_pop = details::os::now();
+    auto last_flush = last_pop;
+    auto active = true;
+    while (active)
     {
-        if (_worker_warmup_cb) _worker_warmup_cb();
-        auto last_pop = details::os::now();
-        auto last_flush = last_pop;
-        while(process_next_msg(last_pop, last_flush));
-        if (_worker_teardown_cb) _worker_teardown_cb();
-    }
-    catch (const std::exception &ex)
-    {
-        _err_handler(ex.what());
-    }
-    catch (...)
-    {
-        _err_handler("Unknown exception");
+        try
+        {
+            active = process_next_msg(last_pop, last_flush);
+        }
+        catch (const std::exception &ex)
+        {
+            _err_handler(ex.what());
+        }
+        catch (...)
+        {
+            _err_handler("Unknown exception");
+        }
     }
+    if (_worker_teardown_cb) _worker_teardown_cb();
+
+
 }
 
 // process next message in the queue
@@ -300,7 +316,7 @@ inline bool spdlog::details::async_log_helper::process_next_msg(log_clock::time_
             _formatter->format(incoming_log_msg);
             for (auto &s : _sinks)
             {
-                if(s->should_log( incoming_log_msg.level))
+                if (s->should_log(incoming_log_msg.level))
                 {
                     s->log(incoming_log_msg);
                 }
@@ -374,5 +390,10 @@ inline void spdlog::details::async_log_helper::wait_empty_q()
     }
 }
 
+inline void spdlog::details::async_log_helper::set_error_handler(spdlog::log_err_handler err_handler)
+{
+    _err_handler = err_handler;
+}
+
 
 

include/spdlog/details/async_logger_impl.h

@@ -8,8 +8,8 @@
 // Async Logger implementation
 // Use an async_sink (queue per logger) to perform the logging in a worker thread
 
-#include <spdlog/details/async_log_helper.h>
-#include <spdlog/async_logger.h>
+#include "spdlog/details/async_log_helper.h"
+#include "spdlog/async_logger.h"
 
 #include <string>
 #include <functional>
@@ -57,15 +57,28 @@ inline void spdlog::async_logger::flush()
     _async_log_helper->flush(true);
 }
 
+// Error handler
+inline void spdlog::async_logger::set_error_handler(spdlog::log_err_handler err_handler)
+{
+    _err_handler = err_handler;
+    _async_log_helper->set_error_handler(err_handler);
+
+}
+inline spdlog::log_err_handler spdlog::async_logger::error_handler()
+{
+    return _err_handler;
+}
+
+
 inline void spdlog::async_logger::_set_formatter(spdlog::formatter_ptr msg_formatter)
 {
     _formatter = msg_formatter;
     _async_log_helper->set_formatter(_formatter);
 }
 
-inline void spdlog::async_logger::_set_pattern(const std::string& pattern)
+inline void spdlog::async_logger::_set_pattern(const std::string& pattern, pattern_time_type pattern_time)
 {
-    _formatter = std::make_shared<pattern_formatter>(pattern);
+    _formatter = std::make_shared<pattern_formatter>(pattern, pattern_time);
     _async_log_helper->set_formatter(_formatter);
 }
 
@@ -74,6 +87,9 @@ inline void spdlog::async_logger::_sink_it(details::log_msg& msg)
 {
     try
     {
+#if defined(SPDLOG_ENABLE_MESSAGE_COUNTER)
+        msg.msg_id = _msg_counter.fetch_add(1, std::memory_order_relaxed);
+#endif
         _async_log_helper->log(msg);
         if (_should_flush_on(msg))
             _async_log_helper->flush(false); // do async flush

include/spdlog/details/file_helper.h

@@ -7,11 +7,10 @@
 
 // Helper class for file sink
 // When failing to open a file, retry several times(5) with small delay between the tries(10 ms)
-// Can be set to auto flush on every line
 // Throw spdlog_ex exception on errors
 
-#include <spdlog/details/os.h>
-#include <spdlog/details/log_msg.h>
+#include "spdlog/details/os.h"
+#include "spdlog/details/log_msg.h"
 
 #include <chrono>
 #include <cstdio>

include/spdlog/details/log_msg.h

@@ -5,8 +5,8 @@
 
 #pragma once
 
-#include <spdlog/common.h>
-#include <spdlog/details/os.h>
+#include "spdlog/common.h"
+#include "spdlog/details/os.h"
 
 
 #include <string>
@@ -19,7 +19,10 @@ namespace details
 struct log_msg
 {
     log_msg() = default;
-    log_msg(const std::string *loggers_name, level::level_enum lvl) : logger_name(loggers_name), level(lvl)
+    log_msg(const std::string *loggers_name, level::level_enum lvl) :
+        logger_name(loggers_name),
+        level(lvl),
+        msg_id(0)
     {
 #ifndef SPDLOG_NO_DATETIME
         time = os::now();
@@ -41,6 +44,7 @@ struct log_msg
     size_t thread_id;
     fmt::MemoryWriter raw;
     fmt::MemoryWriter formatted;
+    size_t msg_id;
 };
 }
 }

include/spdlog/details/logger_impl.h

@@ -5,8 +5,8 @@
 
 #pragma once
 
-#include <spdlog/logger.h>
-#include <spdlog/sinks/stdout_sinks.h>
+#include "spdlog/logger.h"
+#include "spdlog/sinks/stdout_sinks.h"
 
 #include <memory>
 #include <string>
@@ -18,11 +18,12 @@ template<class It>
 inline spdlog::logger::logger(const std::string& logger_name, const It& begin, const It& end):
     _name(logger_name),
     _sinks(begin, end),
-    _formatter(std::make_shared<pattern_formatter>("%+"))
+    _formatter(std::make_shared<pattern_formatter>("%+")),
+    _level(level::info),
+    _flush_level(level::off),
+    _last_err_time(0),
+    _msg_counter(1)  // message counter will start from 1. 0-message id will be reserved for controll messages
 {
-    _level = level::info;
-    _flush_level = level::off;
-    _last_err_time = 0;
     _err_handler = [this](const std::string &msg)
     {
         this->_default_err_handler(msg);
@@ -52,9 +53,9 @@ inline void spdlog::logger::set_formatter(spdlog::formatter_ptr msg_formatter)
     _set_formatter(msg_formatter);
 }
 
-inline void spdlog::logger::set_pattern(const std::string& pattern)
+inline void spdlog::logger::set_pattern(const std::string& pattern, pattern_time_type pattern_time)
 {
-    _set_pattern(pattern);
+    _set_pattern(pattern, pattern_time);
 }
 
 
@@ -121,41 +122,112 @@ inline void spdlog::logger::log(level::level_enum lvl, const T& msg)
 }
 
 
-template <typename... Args>
-inline void spdlog::logger::trace(const char* fmt, const Args&... args)
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::trace(const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::trace, fmt, args...);
+    log(level::trace, fmt, arg1, args...);
+}
+
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::debug(const char* fmt, const Arg1 &arg1, const Args&... args)
+{
+    log(level::debug, fmt, arg1, args...);
+}
+
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::info(const char* fmt, const Arg1 &arg1, const Args&... args)
+{
+    log(level::info, fmt, arg1, args...);
+}
+
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::warn(const char* fmt, const Arg1 &arg1, const Args&... args)
+{
+    log(level::warn, fmt, arg1, args...);
+}
+
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::error(const char* fmt, const Arg1 &arg1, const Args&... args)
+{
+    log(level::err, fmt, arg1, args...);
+}
+
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::critical(const char* fmt, const Arg1 &arg1, const Args&... args)
+{
+    log(level::critical, fmt, arg1, args...);
 }
 
 template <typename... Args>
-inline void spdlog::logger::debug(const char* fmt, const Args&... args)
+inline void spdlog::logger::log_if(const bool flag, level::level_enum lvl, const char* msg)
 {
-    log(level::debug, fmt, args...);
+    if (flag)
+    {
+        log(lvl, msg);
+    }
 }
 
-template <typename... Args>
-inline void spdlog::logger::info(const char* fmt, const Args&... args)
+template<typename T>
+inline void spdlog::logger::log_if(const bool flag, level::level_enum lvl, const T& msg)
 {
-    log(level::info, fmt, args...);
+    if (flag)
+    {
+        log(lvl, msg);
+    }
 }
 
-
-template <typename... Args>
-inline void spdlog::logger::warn(const char* fmt, const Args&... args)
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::trace_if(const bool flag, const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::warn, fmt, args...);
+    if (flag)
+    {
+        log(level::trace, fmt, arg1, args...);
+    }
 }
 
-template <typename... Args>
-inline void spdlog::logger::error(const char* fmt, const Args&... args)
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::debug_if(const bool flag, const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::err, fmt, args...);
+    if (flag)
+    {
+        log(level::debug, fmt, arg1, args...);
+    }
 }
 
-template <typename... Args>
-inline void spdlog::logger::critical(const char* fmt, const Args&... args)
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::info_if(const bool flag, const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::critical, fmt, args...);
+    if (flag)
+    {
+        log(level::info, fmt, arg1, args...);
+    }
+}
+
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::warn_if(const bool flag, const char* fmt, const Arg1& arg1, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::warn, fmt, arg1, args...);
+    }
+}
+
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::error_if(const bool flag, const char* fmt, const Arg1 &arg1, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::err, fmt, arg1, args...);
+    }
+}
+
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::critical_if(const bool flag, const char* fmt, const Arg1 &arg1, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::critical, fmt, arg1, args...);
+    }
 }
 
 
@@ -197,6 +269,196 @@ inline void spdlog::logger::critical(const T& msg)
     log(level::critical, msg);
 }
 
+template<typename T>
+inline void spdlog::logger::trace_if(const bool flag, const T& msg)
+{
+    if (flag)
+    {
+        log(level::trace, msg);
+    }
+}
+
+template<typename T>
+inline void spdlog::logger::debug_if(const bool flag, const T& msg)
+{
+    if (flag)
+    {
+        log(level::debug, msg);
+    }
+}
+
+template<typename T>
+inline void spdlog::logger::info_if(const bool flag, const T& msg)
+{
+    if (flag)
+    {
+        log(level::info, msg);
+    }
+}
+
+template<typename T>
+inline void spdlog::logger::warn_if(const bool flag, const T& msg)
+{
+    if (flag)
+    {
+        log(level::warn, msg);
+    }
+}
+
+template<typename T>
+inline void spdlog::logger::error_if(const bool flag, const T& msg)
+{
+    if (flag)
+    {
+        log(level::err, msg);
+    }
+}
+
+template<typename T>
+inline void spdlog::logger::critical_if(const bool flag, const T& msg)
+{
+    if (flag)
+    {
+        log(level::critical, msg);
+    }
+}
+
+
+#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
+#include <codecvt>
+
+template <typename... Args>
+inline void spdlog::logger::log(level::level_enum lvl, const wchar_t* msg)
+{
+    std::wstring_convert<std::codecvt_utf8<wchar_t> > conv;
+
+    log(lvl, conv.to_bytes(msg));
+}
+
+template <typename... Args>
+inline void spdlog::logger::log(level::level_enum lvl, const wchar_t* fmt, const Args&... args)
+{
+    fmt::WMemoryWriter wWriter;
+
+    wWriter.write(fmt, args...);
+    log(lvl, wWriter.c_str());
+}
+
+template <typename... Args>
+inline void spdlog::logger::trace(const wchar_t* fmt, const Args&... args)
+{
+    log(level::trace, fmt, args...);
+}
+
+template <typename... Args>
+inline void spdlog::logger::debug(const wchar_t* fmt, const Args&... args)
+{
+    log(level::debug, fmt, args...);
+}
+
+template <typename... Args>
+inline void spdlog::logger::info(const wchar_t* fmt, const Args&... args)
+{
+    log(level::info, fmt, args...);
+}
+
+
+template <typename... Args>
+inline void spdlog::logger::warn(const wchar_t* fmt, const Args&... args)
+{
+    log(level::warn, fmt, args...);
+}
+
+template <typename... Args>
+inline void spdlog::logger::error(const wchar_t* fmt, const Args&... args)
+{
+    log(level::err, fmt, args...);
+}
+
+template <typename... Args>
+inline void spdlog::logger::critical(const wchar_t* fmt, const Args&... args)
+{
+    log(level::critical, fmt, args...);
+}
+
+//
+// conditional logging
+//
+
+template <typename... Args>
+inline void spdlog::logger::log_if(const bool flag, level::level_enum lvl, const wchar_t* msg)
+{
+    if (flag)
+    {
+        log(lvl, msg);
+    }
+}
+
+template <typename... Args>
+inline void spdlog::logger::log_if(const bool flag, level::level_enum lvl, const wchar_t* fmt, const Args&... args)
+{
+    if (flag)
+    {
+        log(lvl, fmt, args);
+    }
+}
+
+template <typename... Args>
+inline void spdlog::logger::trace_if(const bool flag, const wchar_t* fmt, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::trace, fmt, args...);
+    }
+}
+
+template <typename... Args>
+inline void spdlog::logger::debug_if(const bool flag, const wchar_t* fmt, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::debug, fmt, args...);
+    }
+}
+
+template <typename... Args>
+inline void spdlog::logger::info_if(const bool flag, const wchar_t* fmt, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::info, fmt, args...);
+    }
+}
+
+
+template <typename... Args>
+inline void spdlog::logger::warn_if(const bool flag, const wchar_t* fmt, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::warn, fmt, args...);
+    }
+}
+
+template <typename... Args>
+inline void spdlog::logger::error_if(const bool flag, const wchar_t* fmt, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::err, fmt, args...);
+    }
+}
+
+template <typename... Args>
+inline void spdlog::logger::critical_if(const bool flag, const wchar_t* fmt, const Args&... args)
+{
+    if (flag)
+    {
+        log(level::critical, fmt, args...);
+    }
+}
+
+#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
 
 
 
@@ -244,6 +506,9 @@ inline bool spdlog::logger::should_log(spdlog::level::level_enum msg_level) cons
 //
 inline void spdlog::logger::_sink_it(details::log_msg& msg)
 {
+#if defined(SPDLOG_ENABLE_MESSAGE_COUNTER)
+    msg.msg_id = _msg_counter.fetch_add(1, std::memory_order_relaxed);
+#endif
     _formatter->format(msg);
     for (auto &sink : _sinks)
     {
@@ -257,9 +522,9 @@ inline void spdlog::logger::_sink_it(details::log_msg& msg)
         flush();
 }
 
-inline void spdlog::logger::_set_pattern(const std::string& pattern)
+inline void spdlog::logger::_set_pattern(const std::string& pattern, pattern_time_type pattern_time)
 {
-    _formatter = std::make_shared<pattern_formatter>(pattern);
+    _formatter = std::make_shared<pattern_formatter>(pattern, pattern_time);
 }
 inline void spdlog::logger::_set_formatter(formatter_ptr msg_formatter)
 {

include/spdlog/details/mpmc_bounded_q.h

@@ -43,7 +43,7 @@ Distributed under the MIT License (http://opensource.org/licenses/MIT)
 
 #pragma once
 
-#include <spdlog/common.h>
+#include "spdlog/common.h"
 
 #include <atomic>
 #include <utility>

include/spdlog/details/os.h

@@ -4,7 +4,7 @@
 //
 #pragma once
 
-#include <spdlog/common.h>
+#include "spdlog/common.h"
 
 #include <cstdio>
 #include <ctime>
@@ -12,8 +12,9 @@
 #include <string>
 #include <chrono>
 #include <thread>
-#include <stdio.h>
-#include <string.h>
+#include <algorithm>
+#include <cstring>
+#include <cstdlib>
 #include <sys/stat.h>
 #include <sys/types.h>
 
@@ -28,7 +29,7 @@
 #endif
 #include <windows.h>
 #include <process.h> //  _get_pid support
-#include <io.h> // _get_osfhandle support
+#include <io.h> // _get_osfhandle and _isatty support
 
 #ifdef __MINGW32__
 #include <share.h>
@@ -150,7 +151,7 @@ inline void prevent_child_fd(FILE *f)
         throw spdlog_ex("SetHandleInformation failed", errno);
 #else
     auto fd = fileno(f);
-    if(fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
+    if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
         throw spdlog_ex("fcntl with FD_CLOEXEC failed", errno);
 #endif
 }
@@ -170,7 +171,7 @@ inline int fopen_s(FILE** fp, const filename_t& filename, const filename_t& mode
 #endif
 
 #ifdef SPDLOG_PREVENT_CHILD_FD
-    if(*fp != nullptr)
+    if (*fp != nullptr)
         prevent_child_fd(*fp);
 #endif
     return *fp == nullptr;
@@ -208,7 +209,7 @@ inline bool file_exists(const filename_t& filename)
     return (attribs != INVALID_FILE_ATTRIBUTES && !(attribs & FILE_ATTRIBUTE_DIRECTORY));
 #else //common linux/unix all have the stat system call
     struct stat buffer;
-    return (stat (filename.c_str(), &buffer) == 0);
+    return (stat(filename.c_str(), &buffer) == 0);
 #endif
 }
 
@@ -329,7 +330,11 @@ inline size_t _thread_id()
     long tid;
     thr_self(&tid);
     return static_cast<size_t>(tid);
-#else //Default to standard C++11 (OSX and other Unix)
+#elif __APPLE__
+    uint64_t tid;
+    pthread_threadid_np(nullptr, &tid);
+    return static_cast<size_t>(tid);
+#else //Default to standard C++11 (other Unix)
     return static_cast<size_t>(std::hash<std::thread::id>()(std::this_thread::get_id()));
 #endif
 }
@@ -364,6 +369,22 @@ inline std::string filename_to_str(const filename_t& filename)
 }
 #endif
 
+inline std::string errno_to_string(char[256], char* res)
+{
+    return std::string(res);
+}
+
+inline std::string errno_to_string(char buf[256], int res)
+{
+    if (res == 0)
+    {
+        return std::string(buf);
+    }
+    else
+    {
+        return "Unknown error";
+    }
+}
 
 // Return errno string (thread safe)
 inline std::string errno_str(int err_num)
@@ -372,10 +393,10 @@ inline std::string errno_str(int err_num)
     SPDLOG_CONSTEXPR auto buf_size = sizeof(buf);
 
 #ifdef _WIN32
-    if(strerror_s(buf, buf_size, err_num) == 0)
+    if (strerror_s(buf, buf_size, err_num) == 0)
         return std::string(buf);
     else
-        return "Unkown error";
+        return "Unknown error";
 
 #elif defined(__FreeBSD__) || defined(__APPLE__) || defined(ANDROID) || defined(__SUNPRO_CC) || \
       ((_POSIX_C_SOURCE >= 200112L) && ! defined(_GNU_SOURCE)) // posix version
@@ -383,10 +404,11 @@ inline std::string errno_str(int err_num)
     if (strerror_r(err_num, buf, buf_size) == 0)
         return std::string(buf);
     else
-        return "Unkown error";
+        return "Unknown error";
 
 #else  // gnu version (might not use the given buf, so its retval pointer must be used)
-    return std::string(strerror_r(err_num, buf, buf_size));
+    auto err = strerror_r(err_num, buf, buf_size); // let compiler choose type
+    return errno_to_string(buf, err); // use overloading to select correct stringify function
 #endif
 }
 
@@ -401,6 +423,47 @@ inline int pid()
 
 }
 
+
+// Detrmine if the terminal supports colors
+// Source: https://github.com/agauniyal/rang/
+inline bool is_color_terminal()
+{
+#ifdef _WIN32
+    return true;
+#else
+    static constexpr const char* Terms[] =
+    {
+        "ansi", "color", "console", "cygwin", "gnome", "konsole", "kterm",
+        "linux", "msys", "putty", "rxvt", "screen", "vt100", "xterm"
+    };
+
+    const char *env_p = std::getenv("TERM");
+    if (env_p == nullptr)
+    {
+        return false;
+    }
+
+    static const bool result = std::any_of(
+                                   std::begin(Terms), std::end(Terms), [&](const char* term)
+    {
+        return std::strstr(env_p, term) != nullptr;
+    });
+    return result;
+#endif
+}
+
+
+// Detrmine if the terminal attached
+// Source: https://github.com/agauniyal/rang/
+inline bool in_terminal(FILE* file)
+{
+
+#ifdef _WIN32
+    return _isatty(_fileno(file)) ? true : false;
+#else
+    return isatty(fileno(file)) ? true : false;
+#endif
+}
 } //os
 } //details
 } //spdlog

include/spdlog/details/pattern_formatter_impl.h

@@ -5,10 +5,10 @@
 
 #pragma once
 
-#include <spdlog/formatter.h>
-#include <spdlog/details/log_msg.h>
-#include <spdlog/details/os.h>
-#include <spdlog/fmt/fmt.h>
+#include "spdlog/formatter.h"
+#include "spdlog/details/log_msg.h"
+#include "spdlog/details/os.h"
+#include "spdlog/fmt/fmt.h"
 
 #include <chrono>
 #include <ctime>
@@ -79,60 +79,42 @@ static int to12h(const tm& t)
 }
 
 //Abbreviated weekday name
-using days_array = std::array<std::string, 7>;
-static const days_array& days()
-{
-    static const days_array arr{ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
-    return arr;
-}
+static const std::string days[] { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
 class a_formatter:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
-        msg.formatted << days()[tm_time.tm_wday];
+        msg.formatted << days[tm_time.tm_wday];
     }
 };
 
 //Full weekday name
-static const days_array& full_days()
-{
-    static const days_array arr{ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };
-    return arr;
-}
+static const std::string full_days[] { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };
 class A_formatter:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
-        msg.formatted << full_days()[tm_time.tm_wday];
+        msg.formatted << full_days[tm_time.tm_wday];
     }
 };
 
 //Abbreviated month
-using months_array = std::array<std::string, 12>;
-static const months_array& months()
-{
-    static const months_array arr{ "Jan", "Feb", "Mar", "Apr", "May", "June", "July", "Aug", "Sept", "Oct", "Nov", "Dec" };
-    return arr;
-}
+static const std::string  months[] { "Jan", "Feb", "Mar", "Apr", "May", "June", "July", "Aug", "Sept", "Oct", "Nov", "Dec" };
 class b_formatter:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
-        msg.formatted << months()[tm_time.tm_mon];
+        msg.formatted << months[tm_time.tm_mon];
     }
 };
 
 //Full month name
-static const months_array& full_months()
-{
-    static const months_array arr{ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };
-    return arr;
-}
+static const std::string full_months[] { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };
 class B_formatter:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
-        msg.formatted << full_months()[tm_time.tm_mon];
+        msg.formatted << full_months[tm_time.tm_mon];
     }
 };
 
@@ -153,18 +135,18 @@ static fmt::MemoryWriter& pad_n_join(fmt::MemoryWriter& w, int v1, int v2, int v
 
 
 //Date and time representation (Thu Aug 23 15:35:46 2014)
-class c_formatter:public flag_formatter
+class c_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
-        msg.formatted << days()[tm_time.tm_wday] << ' ' << months()[tm_time.tm_mon] << ' ' << tm_time.tm_mday << ' ';
+        msg.formatted << days[tm_time.tm_wday] << ' ' << months[tm_time.tm_mon] << ' ' << tm_time.tm_mday << ' ';
         pad_n_join(msg.formatted, tm_time.tm_hour, tm_time.tm_min, tm_time.tm_sec, ':') << ' ' << tm_time.tm_year + 1900;
     }
 };
 
 
 // year - 2 digit
-class C_formatter:public flag_formatter
+class C_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -175,7 +157,7 @@ class C_formatter:public flag_formatter
 
 
 // Short MM/DD/YY date, equivalent to %m/%d/%y 08/23/01
-class D_formatter:public flag_formatter
+class D_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -185,7 +167,7 @@ class D_formatter:public flag_formatter
 
 
 // year - 4 digit
-class Y_formatter:public flag_formatter
+class Y_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -194,7 +176,7 @@ class Y_formatter:public flag_formatter
 };
 
 // month 1-12
-class m_formatter:public flag_formatter
+class m_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -203,7 +185,7 @@ class m_formatter:public flag_formatter
 };
 
 // day of month 1-31
-class d_formatter:public flag_formatter
+class d_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -212,7 +194,7 @@ class d_formatter:public flag_formatter
 };
 
 // hours in 24 format  0-23
-class H_formatter:public flag_formatter
+class H_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -221,7 +203,7 @@ class H_formatter:public flag_formatter
 };
 
 // hours in 12 format  1-12
-class I_formatter:public flag_formatter
+class I_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -230,7 +212,7 @@ class I_formatter:public flag_formatter
 };
 
 // minutes 0-59
-class M_formatter:public flag_formatter
+class M_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -239,7 +221,7 @@ class M_formatter:public flag_formatter
 };
 
 // seconds 0-59
-class S_formatter:public flag_formatter
+class S_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -248,7 +230,7 @@ class S_formatter:public flag_formatter
 };
 
 // milliseconds
-class e_formatter:public flag_formatter
+class e_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm&) override
     {
@@ -259,7 +241,7 @@ class e_formatter:public flag_formatter
 };
 
 // microseconds
-class f_formatter:public flag_formatter
+class f_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm&) override
     {
@@ -270,7 +252,7 @@ class f_formatter:public flag_formatter
 };
 
 // nanoseconds
-class F_formatter:public flag_formatter
+class F_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm&) override
     {
@@ -281,7 +263,7 @@ class F_formatter:public flag_formatter
 };
 
 // AM/PM
-class p_formatter:public flag_formatter
+class p_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -291,7 +273,7 @@ class p_formatter:public flag_formatter
 
 
 // 12 hour clock 02:55:02 pm
-class r_formatter:public flag_formatter
+class r_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -300,7 +282,7 @@ class r_formatter:public flag_formatter
 };
 
 // 24-hour HH:MM time, equivalent to %H:%M
-class R_formatter:public flag_formatter
+class R_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -309,7 +291,7 @@ class R_formatter:public flag_formatter
 };
 
 // ISO 8601 time format (HH:MM:SS), equivalent to %H:%M:%S
-class T_formatter:public flag_formatter
+class T_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -317,14 +299,13 @@ class T_formatter:public flag_formatter
     }
 };
 
-
 // ISO 8601 offset from UTC in timezone (+-HH:MM)
-class z_formatter:public flag_formatter
+class z_formatter SPDLOG_FINAL:public flag_formatter
 {
 public:
     const std::chrono::seconds cache_refresh = std::chrono::seconds(5);
 
-    z_formatter():_last_update(std::chrono::seconds(0))
+    z_formatter():_last_update(std::chrono::seconds(0)), _offset_minutes(0)
     {}
     z_formatter(const z_formatter&) = delete;
     z_formatter& operator=(const z_formatter&) = delete;
@@ -376,7 +357,7 @@ private:
 
 
 // Thread id
-class t_formatter:public flag_formatter
+class t_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm&) override
     {
@@ -385,7 +366,7 @@ class t_formatter:public flag_formatter
 };
 
 // Current pid
-class pid_formatter:public flag_formatter
+class pid_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm&) override
     {
@@ -394,7 +375,7 @@ class pid_formatter:public flag_formatter
 };
 
 
-class v_formatter:public flag_formatter
+class v_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm&) override
     {
@@ -402,7 +383,7 @@ class v_formatter:public flag_formatter
     }
 };
 
-class ch_formatter:public flag_formatter
+class ch_formatter SPDLOG_FINAL:public flag_formatter
 {
 public:
     explicit ch_formatter(char ch): _ch(ch)
@@ -417,7 +398,7 @@ private:
 
 
 //aggregate user chars to display as is
-class aggregate_formatter:public flag_formatter
+class aggregate_formatter SPDLOG_FINAL:public flag_formatter
 {
 public:
     aggregate_formatter()
@@ -436,7 +417,7 @@ private:
 
 // Full info formatter
 // pattern: [%Y-%m-%d %H:%M:%S.%e] [%n] [%l] %v
-class full_formatter:public flag_formatter
+class full_formatter SPDLOG_FINAL:public flag_formatter
 {
     void format(details::log_msg& msg, const std::tm& tm_time) override
     {
@@ -488,7 +469,8 @@ class full_formatter:public flag_formatter
 ///////////////////////////////////////////////////////////////////////////////
 // pattern_formatter inline impl
 ///////////////////////////////////////////////////////////////////////////////
-inline spdlog::pattern_formatter::pattern_formatter(const std::string& pattern)
+inline spdlog::pattern_formatter::pattern_formatter(const std::string& pattern, pattern_time_type pattern_time)
+    : _pattern_time(pattern_time)
 {
     compile_pattern(pattern);
 }
@@ -645,19 +627,32 @@ inline void spdlog::pattern_formatter::handle_flag(char flag)
         _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::pid_formatter()));
         break;
 
-    default: //Unkown flag appears as is
+#if defined(SPDLOG_ENABLE_MESSAGE_COUNTER)
+    case ('i'):
+        _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::i_formatter()));
+        break;
+#endif
+
+    default: //Unknown flag appears as is
         _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::ch_formatter('%')));
         _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::ch_formatter(flag)));
         break;
     }
 }
 
+inline std::tm spdlog::pattern_formatter::get_time(details::log_msg& msg)
+{
+    if (_pattern_time == pattern_time_type::local)
+        return details::os::localtime(log_clock::to_time_t(msg.time));
+    else
+        return details::os::gmtime(log_clock::to_time_t(msg.time));
+}
 
 inline void spdlog::pattern_formatter::format(details::log_msg& msg)
 {
 
 #ifndef SPDLOG_NO_DATETIME
-    auto tm_time = details::os::localtime(log_clock::to_time_t(msg.time));
+    auto tm_time = get_time(msg);
 #else
     std::tm tm_time;
 #endif

include/spdlog/details/registry.h

@@ -10,10 +10,10 @@
 // If user requests a non existing logger, nullptr will be returned
 // This class is thread safe
 
-#include <spdlog/details/null_mutex.h>
-#include <spdlog/logger.h>
-#include <spdlog/async_logger.h>
-#include <spdlog/common.h>
+#include "spdlog/details/null_mutex.h"
+#include "spdlog/logger.h"
+#include "spdlog/async_logger.h"
+#include "spdlog/common.h"
 
 #include <chrono>
 #include <functional>
@@ -71,6 +71,26 @@ public:
         return new_logger;
     }
 
+    template<class It>
+    std::shared_ptr<async_logger> create_async(const std::string& logger_name, size_t queue_size, const async_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb, const std::chrono::milliseconds& flush_interval_ms, const std::function<void()>& worker_teardown_cb, const It& sinks_begin, const It& sinks_end)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        throw_if_exists(logger_name);
+        auto new_logger = std::make_shared<async_logger>(logger_name, sinks_begin, sinks_end, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb);
+
+        if (_formatter)
+            new_logger->set_formatter(_formatter);
+
+        if (_err_handler)
+            new_logger->set_error_handler(_err_handler);
+
+        new_logger->set_level(_level);
+
+        //Add to registry
+        _loggers[logger_name] = new_logger;
+        return new_logger;
+    }
+
     void apply_all(std::function<void(std::shared_ptr<logger>)> fun)
     {
         std::lock_guard<Mutex> lock(_mutex);
@@ -99,6 +119,15 @@ public:
         return create(logger_name, { sink });
     }
 
+    std::shared_ptr<async_logger> create_async(const std::string& logger_name, size_t queue_size, const async_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb, const std::chrono::milliseconds& flush_interval_ms, const std::function<void()>& worker_teardown_cb, sinks_init_list sinks)
+    {
+        return create_async(logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, sinks.begin(), sinks.end());
+    }
+
+    std::shared_ptr<async_logger> create_async(const std::string& logger_name, size_t queue_size, const async_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb, const std::chrono::milliseconds& flush_interval_ms, const std::function<void()>& worker_teardown_cb, sink_ptr sink)
+    {
+        return create_async(logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, { sink });
+    }
 
     void formatter(formatter_ptr f)
     {

include/spdlog/details/spdlog_impl.h

@@ -8,23 +8,23 @@
 //
 // Global registry functions
 //
-#include <spdlog/spdlog.h>
-#include <spdlog/details/registry.h>
-#include <spdlog/sinks/file_sinks.h>
-#include <spdlog/sinks/stdout_sinks.h>
+#include "spdlog/spdlog.h"
+#include "spdlog/details/registry.h"
+#include "spdlog/sinks/file_sinks.h"
+#include "spdlog/sinks/stdout_sinks.h"
 #ifdef SPDLOG_ENABLE_SYSLOG
-#include <spdlog/sinks/syslog_sink.h>
+#include "spdlog/sinks/syslog_sink.h"
 #endif
 
 #ifdef _WIN32
-#include <spdlog/sinks/wincolor_sink.h>
+#include "spdlog/sinks/wincolor_sink.h"
 #else
-#include <spdlog/sinks/ansicolor_sink.h>
+#include "spdlog/sinks/ansicolor_sink.h"
 #endif
 
 
 #ifdef __ANDROID__
-#include <spdlog/sinks/android_sink.h>
+#include "spdlog/sinks/android_sink.h"
 #endif
 
 #include <chrono>
@@ -61,23 +61,23 @@ inline std::shared_ptr<spdlog::logger> spdlog::basic_logger_st(const std::string
 // Create multi/single threaded rotating file logger
 inline std::shared_ptr<spdlog::logger> spdlog::rotating_logger_mt(const std::string& logger_name, const filename_t& filename, size_t max_file_size, size_t max_files)
 {
-    return create<spdlog::sinks::rotating_file_sink_mt>(logger_name, filename, SPDLOG_FILENAME_T("txt"), max_file_size, max_files);
+    return create<spdlog::sinks::rotating_file_sink_mt>(logger_name, filename, max_file_size, max_files);
 }
 
 inline std::shared_ptr<spdlog::logger> spdlog::rotating_logger_st(const std::string& logger_name, const filename_t& filename, size_t max_file_size, size_t max_files)
 {
-    return create<spdlog::sinks::rotating_file_sink_st>(logger_name, filename, SPDLOG_FILENAME_T("txt"), max_file_size, max_files);
+    return create<spdlog::sinks::rotating_file_sink_st>(logger_name, filename, max_file_size, max_files);
 }
 
 // Create file logger which creates new file at midnight):
 inline std::shared_ptr<spdlog::logger> spdlog::daily_logger_mt(const std::string& logger_name, const filename_t& filename, int hour, int minute)
 {
-    return create<spdlog::sinks::daily_file_sink_mt>(logger_name, filename, SPDLOG_FILENAME_T("txt"), hour, minute);
+    return create<spdlog::sinks::daily_file_sink_mt>(logger_name, filename, hour, minute);
 }
 
 inline std::shared_ptr<spdlog::logger> spdlog::daily_logger_st(const std::string& logger_name, const filename_t& filename, int hour, int minute)
 {
-    return create<spdlog::sinks::daily_file_sink_st>(logger_name, filename, SPDLOG_FILENAME_T("txt"), hour, minute);
+    return create<spdlog::sinks::daily_file_sink_st>(logger_name, filename, hour, minute);
 }
 
 
@@ -137,25 +137,25 @@ inline std::shared_ptr<spdlog::logger> spdlog::stderr_color_st(const std::string
 
 inline std::shared_ptr<spdlog::logger> spdlog::stdout_color_mt(const std::string& logger_name)
 {
-    auto sink = std::make_shared<spdlog::sinks::ansicolor_sink>(spdlog::sinks::stdout_sink_mt::instance());
+    auto sink = std::make_shared<spdlog::sinks::ansicolor_stdout_sink_mt>();
     return spdlog::details::registry::instance().create(logger_name, sink);
 }
 
 inline std::shared_ptr<spdlog::logger> spdlog::stdout_color_st(const std::string& logger_name)
 {
-    auto sink = std::make_shared<spdlog::sinks::ansicolor_sink>(spdlog::sinks::stdout_sink_st::instance());
+    auto sink = std::make_shared<spdlog::sinks::ansicolor_stdout_sink_st>();
     return spdlog::details::registry::instance().create(logger_name, sink);
 }
 
 inline std::shared_ptr<spdlog::logger> spdlog::stderr_color_mt(const std::string& logger_name)
 {
-    auto sink = std::make_shared<spdlog::sinks::ansicolor_sink>(spdlog::sinks::stderr_sink_mt::instance());
+    auto sink = std::make_shared<spdlog::sinks::ansicolor_stderr_sink_mt>();
     return spdlog::details::registry::instance().create(logger_name, sink);
 }
 
 inline std::shared_ptr<spdlog::logger> spdlog::stderr_color_st(const std::string& logger_name)
 {
-    auto sink = std::make_shared<spdlog::sinks::ansicolor_sink>(spdlog::sinks::stderr_sink_st::instance());
+    auto sink = std::make_shared<spdlog::sinks::ansicolor_stderr_sink_st>();
     return spdlog::details::registry::instance().create(logger_name, sink);
 }
 #endif
@@ -203,6 +203,24 @@ inline std::shared_ptr<spdlog::logger> spdlog::create(const std::string& logger_
     return details::registry::instance().create(logger_name, sinks_begin, sinks_end);
 }
 
+// Create and register an async logger with a single sink
+inline std::shared_ptr<spdlog::logger> spdlog::create_async(const std::string& logger_name, const sink_ptr& sink, size_t queue_size, const async_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb, const std::chrono::milliseconds& flush_interval_ms, const std::function<void()>& worker_teardown_cb)
+{
+    return details::registry::instance().create_async(logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, sink);
+}
+
+// Create and register an async logger with multiple sinks
+inline std::shared_ptr<spdlog::logger> spdlog::create_async(const std::string& logger_name, sinks_init_list sinks, size_t queue_size, const async_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb, const std::chrono::milliseconds& flush_interval_ms, const std::function<void()>& worker_teardown_cb )
+{
+    return details::registry::instance().create_async(logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, sinks);
+}
+
+template<class It>
+inline std::shared_ptr<spdlog::logger> spdlog::create_async(const std::string& logger_name, const It& sinks_begin, const It& sinks_end, size_t queue_size, const async_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb, const std::chrono::milliseconds& flush_interval_ms, const std::function<void()>& worker_teardown_cb)
+{
+    return details::registry::instance().create_async(logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, sinks_begin, sinks_end);
+}
+
 inline void spdlog::set_formatter(spdlog::formatter_ptr f)
 {
     details::registry::instance().formatter(f);

include/spdlog/fmt/bundled/format.cc

@@ -1,29 +1,29 @@
 /*
-Formatting library for C++
+ Formatting library for C++
 
-Copyright (c) 2012 - 2016, Victor Zverovich
-All rights reserved.
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
 
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
 
-1. Redistributions of source code must retain the above copyright notice, this
-list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright notice,
-this list of conditions and the following disclaimer in the documentation
-and/or other materials provided with the distribution.
+ 1. Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
 
 #include "format.h"
 
@@ -41,6 +41,9 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #endif
 
 #if FMT_USE_WINDOWS_H
+# if !defined(FMT_HEADER_ONLY) && !defined(WIN32_LEAN_AND_MEAN)
+#  define WIN32_LEAN_AND_MEAN
+# endif
 # if defined(NOMINMAX) || defined(FMT_WIN_MINMAX)
 #  include <windows.h>
 # else
@@ -50,8 +53,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 # endif
 #endif
 
-using fmt::internal::Arg;
-
 #if FMT_EXCEPTIONS
 # define FMT_TRY try
 # define FMT_CATCH(x) catch (x)
@@ -71,37 +72,31 @@ using fmt::internal::Arg;
 
 // Dummy implementations of strerror_r and strerror_s called if corresponding
 // system functions are not available.
-static inline fmt::internal::Null<> strerror_r(int, char *, ...)
-{
-	return fmt::internal::Null<>();
+static inline fmt::internal::Null<> strerror_r(int, char *, ...) {
+  return fmt::internal::Null<>();
 }
-static inline fmt::internal::Null<> strerror_s(char *, std::size_t, ...)
-{
-	return fmt::internal::Null<>();
+static inline fmt::internal::Null<> strerror_s(char *, std::size_t, ...) {
+  return fmt::internal::Null<>();
 }
 
 namespace fmt {
 
-	FMT_FUNC internal::RuntimeError::~RuntimeError() FMT_DTOR_NOEXCEPT
-	{}
-	FMT_FUNC FormatError::~FormatError() FMT_DTOR_NOEXCEPT
-	{}
-	FMT_FUNC SystemError::~SystemError() FMT_DTOR_NOEXCEPT
-	{}
+FMT_FUNC internal::RuntimeError::~RuntimeError() FMT_DTOR_NOEXCEPT {}
+FMT_FUNC FormatError::~FormatError() FMT_DTOR_NOEXCEPT {}
+FMT_FUNC SystemError::~SystemError() FMT_DTOR_NOEXCEPT {}
 
-	namespace {
+namespace {
 
 #ifndef _MSC_VER
 # define FMT_SNPRINTF snprintf
 #else  // _MSC_VER
-		inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...)
-		{
-			va_list args;
-			va_start(args, format);
-			int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args);
-			va_end(args);
-			return result;
-		}
+inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) {
+  va_list args;
+  va_start(args, format);
+  int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args);
+  va_end(args);
+  return result;
+}
 # define FMT_SNPRINTF fmt_snprintf
 #endif  // _MSC_VER
 
@@ -111,183 +106,157 @@ namespace fmt {
 # define FMT_SWPRINTF swprintf
 #endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
 
-		const char RESET_COLOR[] = "\x1b[0m";
+const char RESET_COLOR[] = "\x1b[0m";
 
-		typedef void(*FormatFunc)(Writer &, int, StringRef);
+typedef void (*FormatFunc)(Writer &, int, StringRef);
 
-		// Portable thread-safe version of strerror.
-		// Sets buffer to point to a string describing the error code.
-		// This can be either a pointer to a string stored in buffer,
-		// or a pointer to some static immutable string.
-		// Returns one of the following values:
-		//   0      - success
-		//   ERANGE - buffer is not large enough to store the error message
-		//   other  - failure
-		// Buffer should be at least of size 1.
-		int safe_strerror(
-			int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT
-		{
-			FMT_ASSERT(buffer != 0 && buffer_size != 0, "invalid buffer");
+// Portable thread-safe version of strerror.
+// Sets buffer to point to a string describing the error code.
+// This can be either a pointer to a string stored in buffer,
+// or a pointer to some static immutable string.
+// Returns one of the following values:
+//   0      - success
+//   ERANGE - buffer is not large enough to store the error message
+//   other  - failure
+// Buffer should be at least of size 1.
+int safe_strerror(
+    int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT {
+  FMT_ASSERT(buffer != 0 && buffer_size != 0, "invalid buffer");
 
-			class StrError
-			{
-			private:
-				int error_code_;
-				char *&buffer_;
-				std::size_t buffer_size_;
+  class StrError {
+   private:
+    int error_code_;
+    char *&buffer_;
+    std::size_t buffer_size_;
 
-				// A noop assignment operator to avoid bogus warnings.
-				void operator=(const StrError &)
-				{}
+    // A noop assignment operator to avoid bogus warnings.
+    void operator=(const StrError &) {}
 
-				// Handle the result of XSI-compliant version of strerror_r.
-				int handle(int result)
-				{
-					// glibc versions before 2.13 return result in errno.
-					return result == -1 ? errno : result;
-				}
+    // Handle the result of XSI-compliant version of strerror_r.
+    int handle(int result) {
+      // glibc versions before 2.13 return result in errno.
+      return result == -1 ? errno : result;
+    }
 
-				// Handle the result of GNU-specific version of strerror_r.
-				int handle(char *message)
-				{
-					// If the buffer is full then the message is probably truncated.
-					if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
-						return ERANGE;
-					buffer_ = message;
-					return 0;
-				}
+    // Handle the result of GNU-specific version of strerror_r.
+    int handle(char *message) {
+      // If the buffer is full then the message is probably truncated.
+      if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
+        return ERANGE;
+      buffer_ = message;
+      return 0;
+    }
 
-				// Handle the case when strerror_r is not available.
-				int handle(internal::Null<>)
-				{
-					return fallback(strerror_s(buffer_, buffer_size_, error_code_));
-				}
+    // Handle the case when strerror_r is not available.
+    int handle(internal::Null<>) {
+      return fallback(strerror_s(buffer_, buffer_size_, error_code_));
+    }
 
-				// Fallback to strerror_s when strerror_r is not available.
-				int fallback(int result)
-				{
-					// If the buffer is full then the message is probably truncated.
-					return result == 0 && strlen(buffer_) == buffer_size_ - 1 ?
-						ERANGE : result;
-				}
+    // Fallback to strerror_s when strerror_r is not available.
+    int fallback(int result) {
+      // If the buffer is full then the message is probably truncated.
+      return result == 0 && strlen(buffer_) == buffer_size_ - 1 ?
+            ERANGE : result;
+    }
 
-				// Fallback to strerror if strerror_r and strerror_s are not available.
-				int fallback(internal::Null<>)
-				{
-					errno = 0;
-					buffer_ = strerror(error_code_);
-					return errno;
-				}
+    // Fallback to strerror if strerror_r and strerror_s are not available.
+    int fallback(internal::Null<>) {
+      errno = 0;
+      buffer_ = strerror(error_code_);
+      return errno;
+    }
 
-			public:
-				StrError(int err_code, char *&buf, std::size_t buf_size)
-					: error_code_(err_code), buffer_(buf), buffer_size_(buf_size)
-				{}
+   public:
+    StrError(int err_code, char *&buf, std::size_t buf_size)
+      : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {}
 
-				int run()
-				{
-					// Suppress a warning about unused strerror_r.
-					strerror_r(0, FMT_NULL, "");
-					return handle(strerror_r(error_code_, buffer_, buffer_size_));
-				}
-			};
-			return StrError(error_code, buffer, buffer_size).run();
-		}
+    int run() {
+      // Suppress a warning about unused strerror_r.
+      strerror_r(0, FMT_NULL, "");
+      return handle(strerror_r(error_code_, buffer_, buffer_size_));
+    }
+  };
+  return StrError(error_code, buffer, buffer_size).run();
+}
 
-		void format_error_code(Writer &out, int error_code,
-			StringRef message) FMT_NOEXCEPT
-		{
-			// Report error code making sure that the output fits into
-			// INLINE_BUFFER_SIZE to avoid dynamic memory allocation and potential
-			// bad_alloc.
-			out.clear();
-			static const char SEP[] = ": ";
-			static const char ERROR_STR[] = "error ";
-			// Subtract 2 to account for terminating null characters in SEP and ERROR_STR.
-			std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2;
-			typedef internal::IntTraits<int>::MainType MainType;
-			MainType abs_value = static_cast<MainType>(error_code);
-			if (internal::is_negative(error_code)) {
-				abs_value = 0 - abs_value;
-				++error_code_size;
-			}
-			error_code_size += internal::count_digits(abs_value);
-			if (message.size() <= internal::INLINE_BUFFER_SIZE - error_code_size)
-				out << message << SEP;
-			out << ERROR_STR << error_code;
-			assert(out.size() <= internal::INLINE_BUFFER_SIZE);
-		}
+void format_error_code(Writer &out, int error_code,
+                       StringRef message) FMT_NOEXCEPT {
+  // Report error code making sure that the output fits into
+  // INLINE_BUFFER_SIZE to avoid dynamic memory allocation and potential
+  // bad_alloc.
+  out.clear();
+  static const char SEP[] = ": ";
+  static const char ERROR_STR[] = "error ";
+  // Subtract 2 to account for terminating null characters in SEP and ERROR_STR.
+  std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2;
+  typedef internal::IntTraits<int>::MainType MainType;
+  MainType abs_value = static_cast<MainType>(error_code);
+  if (internal::is_negative(error_code)) {
+    abs_value = 0 - abs_value;
+    ++error_code_size;
+  }
+  error_code_size += internal::count_digits(abs_value);
+  if (message.size() <= internal::INLINE_BUFFER_SIZE - error_code_size)
+    out << message << SEP;
+  out << ERROR_STR << error_code;
+  assert(out.size() <= internal::INLINE_BUFFER_SIZE);
+}
 
-		void report_error(FormatFunc func, int error_code,
-			StringRef message) FMT_NOEXCEPT
-		{
-			MemoryWriter full_message;
-			func(full_message, error_code, message);
-			// Use Writer::data instead of Writer::c_str to avoid potential memory
-			// allocation.
-			std::fwrite(full_message.data(), full_message.size(), 1, stderr);
-			std::fputc('\n', stderr);
-		}
-	}  // namespace
+void report_error(FormatFunc func, int error_code,
+                  StringRef message) FMT_NOEXCEPT {
+  MemoryWriter full_message;
+  func(full_message, error_code, message);
+  // Use Writer::data instead of Writer::c_str to avoid potential memory
+  // allocation.
+  std::fwrite(full_message.data(), full_message.size(), 1, stderr);
+  std::fputc('\n', stderr);
+}
+}  // namespace
 
-	namespace internal {
+FMT_FUNC void SystemError::init(
+    int err_code, CStringRef format_str, ArgList args) {
+  error_code_ = err_code;
+  MemoryWriter w;
+  format_system_error(w, err_code, format(format_str, args));
+  std::runtime_error &base = *this;
+  base = std::runtime_error(w.str());
+}
 
-		// This method is used to preserve binary compatibility with fmt 3.0.
-		// It can be removed in 4.0.
-		FMT_FUNC void format_system_error(
-			Writer &out, int error_code, StringRef message) FMT_NOEXCEPT
-		{
-			fmt::format_system_error(out, error_code, message);
-		}
-	}  // namespace internal
+template <typename T>
+int internal::CharTraits<char>::format_float(
+    char *buffer, std::size_t size, const char *format,
+    unsigned width, int precision, T value) {
+  if (width == 0) {
+    return precision < 0 ?
+        FMT_SNPRINTF(buffer, size, format, value) :
+        FMT_SNPRINTF(buffer, size, format, precision, value);
+  }
+  return precision < 0 ?
+      FMT_SNPRINTF(buffer, size, format, width, value) :
+      FMT_SNPRINTF(buffer, size, format, width, precision, value);
+}
 
-	FMT_FUNC void SystemError::init(
-		int err_code, CStringRef format_str, ArgList args)
-	{
-		error_code_ = err_code;
-		MemoryWriter w;
-		format_system_error(w, err_code, format(format_str, args));
-		std::runtime_error &base = *this;
-		base = std::runtime_error(w.str());
-	}
+template <typename T>
+int internal::CharTraits<wchar_t>::format_float(
+    wchar_t *buffer, std::size_t size, const wchar_t *format,
+    unsigned width, int precision, T value) {
+  if (width == 0) {
+    return precision < 0 ?
+        FMT_SWPRINTF(buffer, size, format, value) :
+        FMT_SWPRINTF(buffer, size, format, precision, value);
+  }
+  return precision < 0 ?
+      FMT_SWPRINTF(buffer, size, format, width, value) :
+      FMT_SWPRINTF(buffer, size, format, width, precision, value);
+}
 
-	template <typename T>
-	int internal::CharTraits<char>::format_float(
-		char *buffer, std::size_t size, const char *format,
-		unsigned width, int precision, T value)
-	{
-		if (width == 0) {
-			return precision < 0 ?
-				FMT_SNPRINTF(buffer, size, format, value) :
-				FMT_SNPRINTF(buffer, size, format, precision, value);
-		}
-		return precision < 0 ?
-			FMT_SNPRINTF(buffer, size, format, width, value) :
-			FMT_SNPRINTF(buffer, size, format, width, precision, value);
-	}
-
-	template <typename T>
-	int internal::CharTraits<wchar_t>::format_float(
-		wchar_t *buffer, std::size_t size, const wchar_t *format,
-		unsigned width, int precision, T value)
-	{
-		if (width == 0) {
-			return precision < 0 ?
-				FMT_SWPRINTF(buffer, size, format, value) :
-				FMT_SWPRINTF(buffer, size, format, precision, value);
-		}
-		return precision < 0 ?
-			FMT_SWPRINTF(buffer, size, format, width, value) :
-			FMT_SWPRINTF(buffer, size, format, width, precision, value);
-	}
-
-	template <typename T>
-	const char internal::BasicData<T>::DIGITS[] =
-		"0001020304050607080910111213141516171819"
-		"2021222324252627282930313233343536373839"
-		"4041424344454647484950515253545556575859"
-		"6061626364656667686970717273747576777879"
-		"8081828384858687888990919293949596979899";
+template <typename T>
+const char internal::BasicData<T>::DIGITS[] =
+    "0001020304050607080910111213141516171819"
+    "2021222324252627282930313233343536373839"
+    "4041424344454647484950515253545556575859"
+    "6061626364656667686970717273747576777879"
+    "8081828384858687888990919293949596979899";
 
 #define FMT_POWERS_OF_10(factor) \
   factor * 10, \
@@ -300,279 +269,262 @@ namespace fmt {
   factor * 100000000, \
   factor * 1000000000
 
-	template <typename T>
-	const uint32_t internal::BasicData<T>::POWERS_OF_10_32[] = {
-		0, FMT_POWERS_OF_10(1)
-	};
+template <typename T>
+const uint32_t internal::BasicData<T>::POWERS_OF_10_32[] = {
+  0, FMT_POWERS_OF_10(1)
+};
 
-	template <typename T>
-	const uint64_t internal::BasicData<T>::POWERS_OF_10_64[] = {
-		0,
-		FMT_POWERS_OF_10(1),
-		FMT_POWERS_OF_10(ULongLong(1000000000)),
-		// Multiply several constants instead of using a single long long constant
-		// to avoid warnings about C++98 not supporting long long.
-		ULongLong(1000000000) * ULongLong(1000000000) * 10
-	};
+template <typename T>
+const uint64_t internal::BasicData<T>::POWERS_OF_10_64[] = {
+  0,
+  FMT_POWERS_OF_10(1),
+  FMT_POWERS_OF_10(ULongLong(1000000000)),
+  // Multiply several constants instead of using a single long long constant
+  // to avoid warnings about C++98 not supporting long long.
+  ULongLong(1000000000) * ULongLong(1000000000) * 10
+};
 
-	FMT_FUNC void internal::report_unknown_type(char code, const char *type)
-	{
-		(void)type;
-		if (std::isprint(static_cast<unsigned char>(code))) {
-			FMT_THROW(FormatError(
-				format("unknown format code '{}' for {}", code, type)));
-		}
-		FMT_THROW(FormatError(
-			format("unknown format code '\\x{:02x}' for {}",
-				static_cast<unsigned>(code), type)));
-	}
+FMT_FUNC void internal::report_unknown_type(char code, const char *type) {
+  (void)type;
+  if (std::isprint(static_cast<unsigned char>(code))) {
+    FMT_THROW(FormatError(
+        format("unknown format code '{}' for {}", code, type)));
+  }
+  FMT_THROW(FormatError(
+      format("unknown format code '\\x{:02x}' for {}",
+        static_cast<unsigned>(code), type)));
+}
 
 #if FMT_USE_WINDOWS_H
 
-	FMT_FUNC internal::UTF8ToUTF16::UTF8ToUTF16(StringRef s)
-	{
-		static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16";
-		if (s.size() > INT_MAX)
-			FMT_THROW(WindowsError(ERROR_INVALID_PARAMETER, ERROR_MSG));
-		int s_size = static_cast<int>(s.size());
-		int length = MultiByteToWideChar(
-			CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, FMT_NULL, 0);
-		if (length == 0)
-			FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
-		buffer_.resize(length + 1);
-		length = MultiByteToWideChar(
-			CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length);
-		if (length == 0)
-			FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
-		buffer_[length] = 0;
-	}
+FMT_FUNC internal::UTF8ToUTF16::UTF8ToUTF16(StringRef s) {
+  static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16";
+  if (s.size() > INT_MAX)
+    FMT_THROW(WindowsError(ERROR_INVALID_PARAMETER, ERROR_MSG));
+  int s_size = static_cast<int>(s.size());
+  int length = MultiByteToWideChar(
+      CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, FMT_NULL, 0);
+  if (length == 0)
+    FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
+  buffer_.resize(length + 1);
+  length = MultiByteToWideChar(
+    CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length);
+  if (length == 0)
+    FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
+  buffer_[length] = 0;
+}
 
-	FMT_FUNC internal::UTF16ToUTF8::UTF16ToUTF8(WStringRef s)
-	{
-		if (int error_code = convert(s)) {
-			FMT_THROW(WindowsError(error_code,
-				"cannot convert string from UTF-16 to UTF-8"));
-		}
-	}
+FMT_FUNC internal::UTF16ToUTF8::UTF16ToUTF8(WStringRef s) {
+  if (int error_code = convert(s)) {
+    FMT_THROW(WindowsError(error_code,
+        "cannot convert string from UTF-16 to UTF-8"));
+  }
+}
 
-	FMT_FUNC int internal::UTF16ToUTF8::convert(WStringRef s)
-	{
-		if (s.size() > INT_MAX)
-			return ERROR_INVALID_PARAMETER;
-		int s_size = static_cast<int>(s.size());
-		int length = WideCharToMultiByte(
-			CP_UTF8, 0, s.data(), s_size, FMT_NULL, 0, FMT_NULL, FMT_NULL);
-		if (length == 0)
-			return GetLastError();
-		buffer_.resize(length + 1);
-		length = WideCharToMultiByte(
-			CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, FMT_NULL, FMT_NULL);
-		if (length == 0)
-			return GetLastError();
-		buffer_[length] = 0;
-		return 0;
-	}
+FMT_FUNC int internal::UTF16ToUTF8::convert(WStringRef s) {
+  if (s.size() > INT_MAX)
+    return ERROR_INVALID_PARAMETER;
+  int s_size = static_cast<int>(s.size());
+  int length = WideCharToMultiByte(
+    CP_UTF8, 0, s.data(), s_size, FMT_NULL, 0, FMT_NULL, FMT_NULL);
+  if (length == 0)
+    return GetLastError();
+  buffer_.resize(length + 1);
+  length = WideCharToMultiByte(
+    CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, FMT_NULL, FMT_NULL);
+  if (length == 0)
+    return GetLastError();
+  buffer_[length] = 0;
+  return 0;
+}
 
-	FMT_FUNC void WindowsError::init(
-		int err_code, CStringRef format_str, ArgList args)
-	{
-		error_code_ = err_code;
-		MemoryWriter w;
-		internal::format_windows_error(w, err_code, format(format_str, args));
-		std::runtime_error &base = *this;
-		base = std::runtime_error(w.str());
-	}
+FMT_FUNC void WindowsError::init(
+    int err_code, CStringRef format_str, ArgList args) {
+  error_code_ = err_code;
+  MemoryWriter w;
+  internal::format_windows_error(w, err_code, format(format_str, args));
+  std::runtime_error &base = *this;
+  base = std::runtime_error(w.str());
+}
 
-	FMT_FUNC void internal::format_windows_error(
-		Writer &out, int error_code, StringRef message) FMT_NOEXCEPT
-	{
-		FMT_TRY{
-			MemoryBuffer<wchar_t, INLINE_BUFFER_SIZE> buffer;
-		buffer.resize(INLINE_BUFFER_SIZE);
-		for (;;) {
-			wchar_t *system_message = &buffer[0];
-			int result = FormatMessageW(
-				FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
-				FMT_NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-				system_message, static_cast<uint32_t>(buffer.size()), FMT_NULL);
-			if (result != 0) {
-				UTF16ToUTF8 utf8_message;
-				if (utf8_message.convert(system_message) == ERROR_SUCCESS) {
-					out << message << ": " << utf8_message;
-					return;
-				}
-				break;
-			}
-			if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
-				break;  // Can't get error message, report error code instead.
-			buffer.resize(buffer.size() * 2);
-		}
-		} FMT_CATCH(...)
-		{}
-		fmt::format_error_code(out, error_code, message);  // 'fmt::' is for bcc32.
-	}
+FMT_FUNC void internal::format_windows_error(
+    Writer &out, int error_code, StringRef message) FMT_NOEXCEPT {
+  FMT_TRY {
+    MemoryBuffer<wchar_t, INLINE_BUFFER_SIZE> buffer;
+    buffer.resize(INLINE_BUFFER_SIZE);
+    for (;;) {
+      wchar_t *system_message = &buffer[0];
+      int result = FormatMessageW(
+        FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+        FMT_NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+        system_message, static_cast<uint32_t>(buffer.size()), FMT_NULL);
+      if (result != 0) {
+        UTF16ToUTF8 utf8_message;
+        if (utf8_message.convert(system_message) == ERROR_SUCCESS) {
+          out << message << ": " << utf8_message;
+          return;
+        }
+        break;
+      }
+      if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
+        break;  // Can't get error message, report error code instead.
+      buffer.resize(buffer.size() * 2);
+    }
+  } FMT_CATCH(...) {}
+  fmt::format_error_code(out, error_code, message);  // 'fmt::' is for bcc32.
+}
 
 #endif  // FMT_USE_WINDOWS_H
 
-	FMT_FUNC void format_system_error(
-		Writer &out, int error_code, StringRef message) FMT_NOEXCEPT
-	{
-		FMT_TRY{
-			internal::MemoryBuffer<char, internal::INLINE_BUFFER_SIZE> buffer;
-		buffer.resize(internal::INLINE_BUFFER_SIZE);
-		for (;;) {
-			char *system_message = &buffer[0];
-			int result = safe_strerror(error_code, system_message, buffer.size());
-			if (result == 0) {
-				out << message << ": " << system_message;
-				return;
-			}
-			if (result != ERANGE)
-				break;  // Can't get error message, report error code instead.
-			buffer.resize(buffer.size() * 2);
-		}
-		} FMT_CATCH(...)
-		{}
-		fmt::format_error_code(out, error_code, message);  // 'fmt::' is for bcc32.
-	}
+FMT_FUNC void format_system_error(
+    Writer &out, int error_code, StringRef message) FMT_NOEXCEPT {
+  FMT_TRY {
+    internal::MemoryBuffer<char, internal::INLINE_BUFFER_SIZE> buffer;
+    buffer.resize(internal::INLINE_BUFFER_SIZE);
+    for (;;) {
+      char *system_message = &buffer[0];
+      int result = safe_strerror(error_code, system_message, buffer.size());
+      if (result == 0) {
+        out << message << ": " << system_message;
+        return;
+      }
+      if (result != ERANGE)
+        break;  // Can't get error message, report error code instead.
+      buffer.resize(buffer.size() * 2);
+    }
+  } FMT_CATCH(...) {}
+  fmt::format_error_code(out, error_code, message);  // 'fmt::' is for bcc32.
+}
 
-	template <typename Char>
-	void internal::ArgMap<Char>::init(const ArgList &args)
-	{
-		if (!map_.empty())
-			return;
-		typedef internal::NamedArg<Char> NamedArg;
-		const NamedArg *named_arg = FMT_NULL;
-		bool use_values =
-			args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE;
-		if (use_values) {
-			for (unsigned i = 0;/*nothing*/; ++i) {
-				internal::Arg::Type arg_type = args.type(i);
-				switch (arg_type) {
-				case internal::Arg::NONE:
-					return;
-				case internal::Arg::NAMED_ARG:
-					named_arg = static_cast<const NamedArg*>(args.values_[i].pointer);
-					map_.push_back(Pair(named_arg->name, *named_arg));
-					break;
-				default:
-					/*nothing*/;
-				}
-			}
-			return;
-		}
-		for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i) {
-			internal::Arg::Type arg_type = args.type(i);
-			if (arg_type == internal::Arg::NAMED_ARG) {
-				named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
-				map_.push_back(Pair(named_arg->name, *named_arg));
-			}
-		}
-		for (unsigned i = ArgList::MAX_PACKED_ARGS;/*nothing*/; ++i) {
-			switch (args.args_[i].type) {
-			case internal::Arg::NONE:
-				return;
-			case internal::Arg::NAMED_ARG:
-				named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
-				map_.push_back(Pair(named_arg->name, *named_arg));
-				break;
-			default:
-				/*nothing*/;
-			}
-		}
-	}
+template <typename Char>
+void internal::ArgMap<Char>::init(const ArgList &args) {
+  if (!map_.empty())
+    return;
+  typedef internal::NamedArg<Char> NamedArg;
+  const NamedArg *named_arg = FMT_NULL;
+  bool use_values =
+      args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE;
+  if (use_values) {
+    for (unsigned i = 0;/*nothing*/; ++i) {
+      internal::Arg::Type arg_type = args.type(i);
+      switch (arg_type) {
+      case internal::Arg::NONE:
+        return;
+      case internal::Arg::NAMED_ARG:
+        named_arg = static_cast<const NamedArg*>(args.values_[i].pointer);
+        map_.push_back(Pair(named_arg->name, *named_arg));
+        break;
+      default:
+        /*nothing*/;
+      }
+    }
+    return;
+  }
+  for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i) {
+    internal::Arg::Type arg_type = args.type(i);
+    if (arg_type == internal::Arg::NAMED_ARG) {
+      named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
+      map_.push_back(Pair(named_arg->name, *named_arg));
+    }
+  }
+  for (unsigned i = ArgList::MAX_PACKED_ARGS;/*nothing*/; ++i) {
+    switch (args.args_[i].type) {
+    case internal::Arg::NONE:
+      return;
+    case internal::Arg::NAMED_ARG:
+      named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
+      map_.push_back(Pair(named_arg->name, *named_arg));
+      break;
+    default:
+      /*nothing*/;
+    }
+  }
+}
 
-	template <typename Char>
-	void internal::FixedBuffer<Char>::grow(std::size_t)
-	{
-		FMT_THROW(std::runtime_error("buffer overflow"));
-	}
+template <typename Char>
+void internal::FixedBuffer<Char>::grow(std::size_t) {
+  FMT_THROW(std::runtime_error("buffer overflow"));
+}
 
-	FMT_FUNC Arg internal::FormatterBase::do_get_arg(
-		unsigned arg_index, const char *&error)
-	{
-		Arg arg = args_[arg_index];
-		switch (arg.type) {
-		case Arg::NONE:
-			error = "argument index out of range";
-			break;
-		case Arg::NAMED_ARG:
-			arg = *static_cast<const internal::Arg*>(arg.pointer);
-			break;
-		default:
-			/*nothing*/;
-		}
-		return arg;
-	}
+FMT_FUNC internal::Arg internal::FormatterBase::do_get_arg(
+    unsigned arg_index, const char *&error) {
+  internal::Arg arg = args_[arg_index];
+  switch (arg.type) {
+  case internal::Arg::NONE:
+    error = "argument index out of range";
+    break;
+  case internal::Arg::NAMED_ARG:
+    arg = *static_cast<const internal::Arg*>(arg.pointer);
+    break;
+  default:
+    /*nothing*/;
+  }
+  return arg;
+}
 
-	FMT_FUNC void report_system_error(
-		int error_code, fmt::StringRef message) FMT_NOEXCEPT
-	{
-		// 'fmt::' is for bcc32.
-		report_error(format_system_error, error_code, message);
-	}
+FMT_FUNC void report_system_error(
+    int error_code, fmt::StringRef message) FMT_NOEXCEPT {
+  // 'fmt::' is for bcc32.
+  report_error(format_system_error, error_code, message);
+}
 
 #if FMT_USE_WINDOWS_H
-	FMT_FUNC void report_windows_error(
-		int error_code, fmt::StringRef message) FMT_NOEXCEPT
-	{
-		// 'fmt::' is for bcc32.
-		report_error(internal::format_windows_error, error_code, message);
-	}
+FMT_FUNC void report_windows_error(
+    int error_code, fmt::StringRef message) FMT_NOEXCEPT {
+  // 'fmt::' is for bcc32.
+  report_error(internal::format_windows_error, error_code, message);
+}
 #endif
 
-	FMT_FUNC void print(std::FILE *f, CStringRef format_str, ArgList args)
-	{
-		MemoryWriter w;
-		w.write(format_str, args);
-		std::fwrite(w.data(), 1, w.size(), f);
-	}
+FMT_FUNC void print(std::FILE *f, CStringRef format_str, ArgList args) {
+  MemoryWriter w;
+  w.write(format_str, args);
+  std::fwrite(w.data(), 1, w.size(), f);
+}
 
-	FMT_FUNC void print(CStringRef format_str, ArgList args)
-	{
-		print(stdout, format_str, args);
-	}
+FMT_FUNC void print(CStringRef format_str, ArgList args) {
+  print(stdout, format_str, args);
+}
 
-	FMT_FUNC void print_colored(Color c, CStringRef format, ArgList args)
-	{
-		char escape[] = "\x1b[30m";
-		escape[3] = static_cast<char>('0' + c);
-		std::fputs(escape, stdout);
-		print(format, args);
-		std::fputs(RESET_COLOR, stdout);
-	}
+FMT_FUNC void print_colored(Color c, CStringRef format, ArgList args) {
+  char escape[] = "\x1b[30m";
+  escape[3] = static_cast<char>('0' + c);
+  std::fputs(escape, stdout);
+  print(format, args);
+  std::fputs(RESET_COLOR, stdout);
+}
 
 #ifndef FMT_HEADER_ONLY
 
-	template struct internal::BasicData<void>;
+template struct internal::BasicData<void>;
 
-	// Explicit instantiations for char.
+// Explicit instantiations for char.
 
-	template void internal::FixedBuffer<char>::grow(std::size_t);
+template void internal::FixedBuffer<char>::grow(std::size_t);
 
-	template void internal::ArgMap<char>::init(const ArgList &args);
+template void internal::ArgMap<char>::init(const ArgList &args);
 
-	template int internal::CharTraits<char>::format_float(
-		char *buffer, std::size_t size, const char *format,
-		unsigned width, int precision, double value);
+template FMT_API int internal::CharTraits<char>::format_float(
+    char *buffer, std::size_t size, const char *format,
+    unsigned width, int precision, double value);
 
-	template int internal::CharTraits<char>::format_float(
-		char *buffer, std::size_t size, const char *format,
-		unsigned width, int precision, long double value);
+template FMT_API int internal::CharTraits<char>::format_float(
+    char *buffer, std::size_t size, const char *format,
+    unsigned width, int precision, long double value);
 
-	// Explicit instantiations for wchar_t.
+// Explicit instantiations for wchar_t.
 
-	template void internal::FixedBuffer<wchar_t>::grow(std::size_t);
+template void internal::FixedBuffer<wchar_t>::grow(std::size_t);
 
-	template void internal::ArgMap<wchar_t>::init(const ArgList &args);
+template void internal::ArgMap<wchar_t>::init(const ArgList &args);
 
-	template int internal::CharTraits<wchar_t>::format_float(
-		wchar_t *buffer, std::size_t size, const wchar_t *format,
-		unsigned width, int precision, double value);
+template FMT_API int internal::CharTraits<wchar_t>::format_float(
+    wchar_t *buffer, std::size_t size, const wchar_t *format,
+    unsigned width, int precision, double value);
 
-	template int internal::CharTraits<wchar_t>::format_float(
-		wchar_t *buffer, std::size_t size, const wchar_t *format,
-		unsigned width, int precision, long double value);
+template FMT_API int internal::CharTraits<wchar_t>::format_float(
+    wchar_t *buffer, std::size_t size, const wchar_t *format,
+    unsigned width, int precision, long double value);
 
 #endif  // FMT_HEADER_ONLY
 

include/spdlog/fmt/bundled/ostream.cc

@@ -1,37 +1,35 @@
 /*
-Formatting library for C++ - std::ostream support
+ Formatting library for C++ - std::ostream support
 
-Copyright (c) 2012 - 2016, Victor Zverovich
-All rights reserved.
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
 
-For the license information refer to format.h.
-*/
+ For the license information refer to format.h.
+ */
 
 #include "ostream.h"
 
 namespace fmt {
 
-	namespace internal {
-		FMT_FUNC void write(std::ostream &os, Writer &w)
-		{
-			const char *data = w.data();
-			typedef internal::MakeUnsigned<std::streamsize>::Type UnsignedStreamSize;
-			UnsignedStreamSize size = w.size();
-			UnsignedStreamSize max_size =
-				internal::to_unsigned((std::numeric_limits<std::streamsize>::max)());
-			do {
-				UnsignedStreamSize n = size <= max_size ? size : max_size;
-				os.write(data, static_cast<std::streamsize>(n));
-				data += n;
-				size -= n;
-			} while (size != 0);
-		}
-	}
+namespace internal {
+FMT_FUNC void write(std::ostream &os, Writer &w) {
+  const char *data = w.data();
+  typedef internal::MakeUnsigned<std::streamsize>::Type UnsignedStreamSize;
+  UnsignedStreamSize size = w.size();
+  UnsignedStreamSize max_size =
+      internal::to_unsigned((std::numeric_limits<std::streamsize>::max)());
+  do {
+    UnsignedStreamSize n = size <= max_size ? size : max_size;
+    os.write(data, static_cast<std::streamsize>(n));
+    data += n;
+    size -= n;
+  } while (size != 0);
+}
+}
 
-	FMT_FUNC void print(std::ostream &os, CStringRef format_str, ArgList args)
-	{
-		MemoryWriter w;
-		w.write(format_str, args);
-		internal::write(os, w);
-	}
+FMT_FUNC void print(std::ostream &os, CStringRef format_str, ArgList args) {
+  MemoryWriter w;
+  w.write(format_str, args);
+  internal::write(os, w);
+}
 }  // namespace fmt

include/spdlog/fmt/bundled/ostream.h

@@ -1,112 +1,99 @@
 /*
-Formatting library for C++ - std::ostream support
+ Formatting library for C++ - std::ostream support
 
-Copyright (c) 2012 - 2016, Victor Zverovich
-All rights reserved.
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
 
-For the license information refer to format.h.
-*/
+ For the license information refer to format.h.
+ */
 
 #ifndef FMT_OSTREAM_H_
 #define FMT_OSTREAM_H_
 
-// commented out by spdlog
-// #include "format.h"
+#include "format.h"
 #include <ostream>
 
-namespace fmt
-{
+namespace fmt {
 
-namespace internal
-{
+namespace internal {
 
 template <class Char>
-class FormatBuf: public std::basic_streambuf<Char>
-{
-private:
-    typedef typename std::basic_streambuf<Char>::int_type int_type;
-    typedef typename std::basic_streambuf<Char>::traits_type traits_type;
+class FormatBuf : public std::basic_streambuf<Char> {
+ private:
+  typedef typename std::basic_streambuf<Char>::int_type int_type;
+  typedef typename std::basic_streambuf<Char>::traits_type traits_type;
 
-    Buffer<Char> &buffer_;
-    Char *start_;
+  Buffer<Char> &buffer_;
 
-public:
-    FormatBuf(Buffer<Char> &buffer): buffer_(buffer), start_(&buffer[0])
-    {
-        this->setp(start_, start_ + buffer_.capacity());
-    }
+ public:
+  FormatBuf(Buffer<Char> &buffer) : buffer_(buffer) {}
 
-    int_type overflow(int_type ch = traits_type::eof())
-    {
-        if (!traits_type::eq_int_type(ch, traits_type::eof()))
-        {
-            size_t buf_size = size();
-            buffer_.resize(buf_size);
-            buffer_.reserve(buf_size * 2);
+ protected:
+  // The put-area is actually always empty. This makes the implementation
+  // simpler and has the advantage that the streambuf and the buffer are always
+  // in sync and sputc never writes into uninitialized memory. The obvious
+  // disadvantage is that each call to sputc always results in a (virtual) call
+  // to overflow. There is no disadvantage here for sputn since this always
+  // results in a call to xsputn.
 
-            start_ = &buffer_[0];
-            start_[buf_size] = traits_type::to_char_type(ch);
-            this->setp(start_ + buf_size + 1, start_ + buf_size * 2);
-        }
-        return ch;
-    }
+  int_type overflow(int_type ch = traits_type::eof()) FMT_OVERRIDE {
+    if (!traits_type::eq_int_type(ch, traits_type::eof()))
+      buffer_.push_back(static_cast<Char>(ch));
+    return ch;
+  }
 
-    size_t size() const
-    {
-        return to_unsigned(this->pptr() - start_);
-    }
+  std::streamsize xsputn(const Char *s, std::streamsize count) FMT_OVERRIDE {
+    buffer_.append(s, s + count);
+    return count;
+  }
 };
 
 Yes &convert(std::ostream &);
 
-struct DummyStream: std::ostream
-{
-    DummyStream();  // Suppress a bogus warning in MSVC.
-    // Hide all operator<< overloads from std::ostream.
-    void operator<<(Null<>);
+struct DummyStream : std::ostream {
+  DummyStream();  // Suppress a bogus warning in MSVC.
+  // Hide all operator<< overloads from std::ostream.
+  void operator<<(Null<>);
 };
 
 No &operator<<(std::ostream &, int);
 
 template<typename T>
-struct ConvertToIntImpl<T, true>
-{
-    // Convert to int only if T doesn't have an overloaded operator<<.
-    enum
-    {
-        value = sizeof(convert(get<DummyStream>() << get<T>())) == sizeof(No)
-    };
+struct ConvertToIntImpl<T, true> {
+  // Convert to int only if T doesn't have an overloaded operator<<.
+  enum {
+    value = sizeof(convert(get<DummyStream>() << get<T>())) == sizeof(No)
+  };
 };
 
 // Write the content of w to os.
-void write(std::ostream &os, Writer &w);
+FMT_API void write(std::ostream &os, Writer &w);
 }  // namespace internal
 
 // Formats a value.
-template <typename Char, typename ArgFormatter, typename T>
-void format_arg(BasicFormatter<Char, ArgFormatter> &f,
-                const Char *&format_str, const T &value)
-{
-    internal::MemoryBuffer<Char, internal::INLINE_BUFFER_SIZE> buffer;
+template <typename Char, typename ArgFormatter_, typename T>
+void format_arg(BasicFormatter<Char, ArgFormatter_> &f,
+                const Char *&format_str, const T &value) {
+  internal::MemoryBuffer<Char, internal::INLINE_BUFFER_SIZE> buffer;
 
-    internal::FormatBuf<Char> format_buf(buffer);
-    std::basic_ostream<Char> output(&format_buf);
-    output << value;
+  internal::FormatBuf<Char> format_buf(buffer);
+  std::basic_ostream<Char> output(&format_buf);
+  output << value;
 
-    BasicStringRef<Char> str(&buffer[0], format_buf.size());
-    typedef internal::MakeArg< BasicFormatter<Char> > MakeArg;
-    format_str = f.format(format_str, MakeArg(str));
+  BasicStringRef<Char> str(&buffer[0], buffer.size());
+  typedef internal::MakeArg< BasicFormatter<Char> > MakeArg;
+  format_str = f.format(format_str, MakeArg(str));
 }
 
 /**
-\rst
-Prints formatted data to the stream *os*.
+  \rst
+  Prints formatted data to the stream *os*.
 
-**Example**::
+  **Example**::
 
-print(cerr, "Don't {}!", "panic");
-\endrst
-*/
+    print(cerr, "Don't {}!", "panic");
+  \endrst
+ */
 FMT_API void print(std::ostream &os, CStringRef format_str, ArgList args);
 FMT_VARIADIC(void, print, std::ostream &, CStringRef)
 }  // namespace fmt

include/spdlog/fmt/bundled/posix.cc

@@ -0,0 +1,241 @@
+/*
+ A C++ interface to POSIX functions.
+
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
+
+ For the license information refer to format.h.
+ */
+
+// Disable bogus MSVC warnings.
+#ifndef _CRT_SECURE_NO_WARNINGS
+# define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "posix.h"
+
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifndef _WIN32
+# include <unistd.h>
+#else
+# ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+# endif
+# include <windows.h>
+# include <io.h>
+
+# define O_CREAT _O_CREAT
+# define O_TRUNC _O_TRUNC
+
+# ifndef S_IRUSR
+#  define S_IRUSR _S_IREAD
+# endif
+
+# ifndef S_IWUSR
+#  define S_IWUSR _S_IWRITE
+# endif
+
+# ifdef __MINGW32__
+#  define _SH_DENYNO 0x40
+# endif
+
+#endif  // _WIN32
+
+#ifdef fileno
+# undef fileno
+#endif
+
+namespace {
+#ifdef _WIN32
+// Return type of read and write functions.
+typedef int RWResult;
+
+// On Windows the count argument to read and write is unsigned, so convert
+// it from size_t preventing integer overflow.
+inline unsigned convert_rwcount(std::size_t count) {
+  return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX;
+}
+#else
+// Return type of read and write functions.
+typedef ssize_t RWResult;
+
+inline std::size_t convert_rwcount(std::size_t count) { return count; }
+#endif
+}
+
+fmt::BufferedFile::~BufferedFile() FMT_NOEXCEPT {
+  if (file_ && FMT_SYSTEM(fclose(file_)) != 0)
+    fmt::report_system_error(errno, "cannot close file");
+}
+
+fmt::BufferedFile::BufferedFile(
+    fmt::CStringRef filename, fmt::CStringRef mode) {
+  FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())), 0);
+  if (!file_)
+    FMT_THROW(SystemError(errno, "cannot open file {}", filename));
+}
+
+void fmt::BufferedFile::close() {
+  if (!file_)
+    return;
+  int result = FMT_SYSTEM(fclose(file_));
+  file_ = FMT_NULL;
+  if (result != 0)
+    FMT_THROW(SystemError(errno, "cannot close file"));
+}
+
+// A macro used to prevent expansion of fileno on broken versions of MinGW.
+#define FMT_ARGS
+
+int fmt::BufferedFile::fileno() const {
+  int fd = FMT_POSIX_CALL(fileno FMT_ARGS(file_));
+  if (fd == -1)
+    FMT_THROW(SystemError(errno, "cannot get file descriptor"));
+  return fd;
+}
+
+fmt::File::File(fmt::CStringRef path, int oflag) {
+  int mode = S_IRUSR | S_IWUSR;
+#if defined(_WIN32) && !defined(__MINGW32__)
+  fd_ = -1;
+  FMT_POSIX_CALL(sopen_s(&fd_, path.c_str(), oflag, _SH_DENYNO, mode));
+#else
+  FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, mode)));
+#endif
+  if (fd_ == -1)
+    FMT_THROW(SystemError(errno, "cannot open file {}", path));
+}
+
+fmt::File::~File() FMT_NOEXCEPT {
+  // Don't retry close in case of EINTR!
+  // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
+  if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0)
+    fmt::report_system_error(errno, "cannot close file");
+}
+
+void fmt::File::close() {
+  if (fd_ == -1)
+    return;
+  // Don't retry close in case of EINTR!
+  // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
+  int result = FMT_POSIX_CALL(close(fd_));
+  fd_ = -1;
+  if (result != 0)
+    FMT_THROW(SystemError(errno, "cannot close file"));
+}
+
+fmt::LongLong fmt::File::size() const {
+#ifdef _WIN32
+  // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT
+  // is less than 0x0500 as is the case with some default MinGW builds.
+  // Both functions support large file sizes.
+  DWORD size_upper = 0;
+  HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_));
+  DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper));
+  if (size_lower == INVALID_FILE_SIZE) {
+    DWORD error = GetLastError();
+    if (error != NO_ERROR)
+      FMT_THROW(WindowsError(GetLastError(), "cannot get file size"));
+  }
+  fmt::ULongLong long_size = size_upper;
+  return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower;
+#else
+  typedef struct stat Stat;
+  Stat file_stat = Stat();
+  if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1)
+    FMT_THROW(SystemError(errno, "cannot get file attributes"));
+  FMT_STATIC_ASSERT(sizeof(fmt::LongLong) >= sizeof(file_stat.st_size),
+      "return type of File::size is not large enough");
+  return file_stat.st_size;
+#endif
+}
+
+std::size_t fmt::File::read(void *buffer, std::size_t count) {
+  RWResult result = 0;
+  FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count))));
+  if (result < 0)
+    FMT_THROW(SystemError(errno, "cannot read from file"));
+  return internal::to_unsigned(result);
+}
+
+std::size_t fmt::File::write(const void *buffer, std::size_t count) {
+  RWResult result = 0;
+  FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count))));
+  if (result < 0)
+    FMT_THROW(SystemError(errno, "cannot write to file"));
+  return internal::to_unsigned(result);
+}
+
+fmt::File fmt::File::dup(int fd) {
+  // Don't retry as dup doesn't return EINTR.
+  // http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html
+  int new_fd = FMT_POSIX_CALL(dup(fd));
+  if (new_fd == -1)
+    FMT_THROW(SystemError(errno, "cannot duplicate file descriptor {}", fd));
+  return File(new_fd);
+}
+
+void fmt::File::dup2(int fd) {
+  int result = 0;
+  FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
+  if (result == -1) {
+    FMT_THROW(SystemError(errno,
+      "cannot duplicate file descriptor {} to {}", fd_, fd));
+  }
+}
+
+void fmt::File::dup2(int fd, ErrorCode &ec) FMT_NOEXCEPT {
+  int result = 0;
+  FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
+  if (result == -1)
+    ec = ErrorCode(errno);
+}
+
+void fmt::File::pipe(File &read_end, File &write_end) {
+  // Close the descriptors first to make sure that assignments don't throw
+  // and there are no leaks.
+  read_end.close();
+  write_end.close();
+  int fds[2] = {};
+#ifdef _WIN32
+  // Make the default pipe capacity same as on Linux 2.6.11+.
+  enum { DEFAULT_CAPACITY = 65536 };
+  int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
+#else
+  // Don't retry as the pipe function doesn't return EINTR.
+  // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
+  int result = FMT_POSIX_CALL(pipe(fds));
+#endif
+  if (result != 0)
+    FMT_THROW(SystemError(errno, "cannot create pipe"));
+  // The following assignments don't throw because read_fd and write_fd
+  // are closed.
+  read_end = File(fds[0]);
+  write_end = File(fds[1]);
+}
+
+fmt::BufferedFile fmt::File::fdopen(const char *mode) {
+  // Don't retry as fdopen doesn't return EINTR.
+  FILE *f = FMT_POSIX_CALL(fdopen(fd_, mode));
+  if (!f)
+    FMT_THROW(SystemError(errno, "cannot associate stream with file descriptor"));
+  BufferedFile file(f);
+  fd_ = -1;
+  return file;
+}
+
+long fmt::getpagesize() {
+#ifdef _WIN32
+  SYSTEM_INFO si;
+  GetSystemInfo(&si);
+  return si.dwPageSize;
+#else
+  long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE));
+  if (size < 0)
+    FMT_THROW(SystemError(errno, "cannot get memory page size"));
+  return size;
+#endif
+}

include/spdlog/fmt/bundled/posix.h

@@ -0,0 +1,367 @@
+/*
+ A C++ interface to POSIX functions.
+
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
+
+ For the license information refer to format.h.
+ */
+
+#ifndef FMT_POSIX_H_
+#define FMT_POSIX_H_
+
+#if defined(__MINGW32__) || defined(__CYGWIN__)
+// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/.
+# undef __STRICT_ANSI__
+#endif
+
+#include <errno.h>
+#include <fcntl.h>   // for O_RDONLY
+#include <locale.h>  // for locale_t
+#include <stdio.h>
+#include <stdlib.h>  // for strtod_l
+
+#include <cstddef>
+
+#if defined __APPLE__ || defined(__FreeBSD__)
+# include <xlocale.h>  // for LC_NUMERIC_MASK on OS X
+#endif
+
+#include "format.h"
+
+#ifndef FMT_POSIX
+# if defined(_WIN32) && !defined(__MINGW32__)
+// Fix warnings about deprecated symbols.
+#  define FMT_POSIX(call) _##call
+# else
+#  define FMT_POSIX(call) call
+# endif
+#endif
+
+// Calls to system functions are wrapped in FMT_SYSTEM for testability.
+#ifdef FMT_SYSTEM
+# define FMT_POSIX_CALL(call) FMT_SYSTEM(call)
+#else
+# define FMT_SYSTEM(call) call
+# ifdef _WIN32
+// Fix warnings about deprecated symbols.
+#  define FMT_POSIX_CALL(call) ::_##call
+# else
+#  define FMT_POSIX_CALL(call) ::call
+# endif
+#endif
+
+// Retries the expression while it evaluates to error_result and errno
+// equals to EINTR.
+#ifndef _WIN32
+# define FMT_RETRY_VAL(result, expression, error_result) \
+  do { \
+    result = (expression); \
+  } while (result == error_result && errno == EINTR)
+#else
+# define FMT_RETRY_VAL(result, expression, error_result) result = (expression)
+#endif
+
+#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
+
+namespace fmt {
+
+// An error code.
+class ErrorCode {
+ private:
+  int value_;
+
+ public:
+  explicit ErrorCode(int value = 0) FMT_NOEXCEPT : value_(value) {}
+
+  int get() const FMT_NOEXCEPT { return value_; }
+};
+
+// A buffered file.
+class BufferedFile {
+ private:
+  FILE *file_;
+
+  friend class File;
+
+  explicit BufferedFile(FILE *f) : file_(f) {}
+
+ public:
+  // Constructs a BufferedFile object which doesn't represent any file.
+  BufferedFile() FMT_NOEXCEPT : file_(FMT_NULL) {}
+
+  // Destroys the object closing the file it represents if any.
+  FMT_API ~BufferedFile() FMT_NOEXCEPT;
+
+#if !FMT_USE_RVALUE_REFERENCES
+  // Emulate a move constructor and a move assignment operator if rvalue
+  // references are not supported.
+
+ private:
+  // A proxy object to emulate a move constructor.
+  // It is private to make it impossible call operator Proxy directly.
+  struct Proxy {
+    FILE *file;
+  };
+
+public:
+  // A "move constructor" for moving from a temporary.
+  BufferedFile(Proxy p) FMT_NOEXCEPT : file_(p.file) {}
+
+  // A "move constructor" for moving from an lvalue.
+  BufferedFile(BufferedFile &f) FMT_NOEXCEPT : file_(f.file_) {
+    f.file_ = FMT_NULL;
+  }
+
+  // A "move assignment operator" for moving from a temporary.
+  BufferedFile &operator=(Proxy p) {
+    close();
+    file_ = p.file;
+    return *this;
+  }
+
+  // A "move assignment operator" for moving from an lvalue.
+  BufferedFile &operator=(BufferedFile &other) {
+    close();
+    file_ = other.file_;
+    other.file_ = FMT_NULL;
+    return *this;
+  }
+
+  // Returns a proxy object for moving from a temporary:
+  //   BufferedFile file = BufferedFile(...);
+  operator Proxy() FMT_NOEXCEPT {
+    Proxy p = {file_};
+    file_ = FMT_NULL;
+    return p;
+  }
+
+#else
+ private:
+  FMT_DISALLOW_COPY_AND_ASSIGN(BufferedFile);
+
+ public:
+  BufferedFile(BufferedFile &&other) FMT_NOEXCEPT : file_(other.file_) {
+    other.file_ = FMT_NULL;
+  }
+
+  BufferedFile& operator=(BufferedFile &&other) {
+    close();
+    file_ = other.file_;
+    other.file_ = FMT_NULL;
+    return *this;
+  }
+#endif
+
+  // Opens a file.
+  FMT_API BufferedFile(CStringRef filename, CStringRef mode);
+
+  // Closes the file.
+  FMT_API void close();
+
+  // Returns the pointer to a FILE object representing this file.
+  FILE *get() const FMT_NOEXCEPT { return file_; }
+
+  // We place parentheses around fileno to workaround a bug in some versions
+  // of MinGW that define fileno as a macro.
+  FMT_API int (fileno)() const;
+
+  void print(CStringRef format_str, const ArgList &args) {
+    fmt::print(file_, format_str, args);
+  }
+  FMT_VARIADIC(void, print, CStringRef)
+};
+
+// A file. Closed file is represented by a File object with descriptor -1.
+// Methods that are not declared with FMT_NOEXCEPT may throw
+// fmt::SystemError in case of failure. Note that some errors such as
+// closing the file multiple times will cause a crash on Windows rather
+// than an exception. You can get standard behavior by overriding the
+// invalid parameter handler with _set_invalid_parameter_handler.
+class File {
+ private:
+  int fd_;  // File descriptor.
+
+  // Constructs a File object with a given descriptor.
+  explicit File(int fd) : fd_(fd) {}
+
+ public:
+  // Possible values for the oflag argument to the constructor.
+  enum {
+    RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only.
+    WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only.
+    RDWR   = FMT_POSIX(O_RDWR)    // Open for reading and writing.
+  };
+
+  // Constructs a File object which doesn't represent any file.
+  File() FMT_NOEXCEPT : fd_(-1) {}
+
+  // Opens a file and constructs a File object representing this file.
+  FMT_API File(CStringRef path, int oflag);
+
+#if !FMT_USE_RVALUE_REFERENCES
+  // Emulate a move constructor and a move assignment operator if rvalue
+  // references are not supported.
+
+ private:
+  // A proxy object to emulate a move constructor.
+  // It is private to make it impossible call operator Proxy directly.
+  struct Proxy {
+    int fd;
+  };
+
+ public:
+  // A "move constructor" for moving from a temporary.
+  File(Proxy p) FMT_NOEXCEPT : fd_(p.fd) {}
+
+  // A "move constructor" for moving from an lvalue.
+  File(File &other) FMT_NOEXCEPT : fd_(other.fd_) {
+    other.fd_ = -1;
+  }
+
+  // A "move assignment operator" for moving from a temporary.
+  File &operator=(Proxy p) {
+    close();
+    fd_ = p.fd;
+    return *this;
+  }
+
+  // A "move assignment operator" for moving from an lvalue.
+  File &operator=(File &other) {
+    close();
+    fd_ = other.fd_;
+    other.fd_ = -1;
+    return *this;
+  }
+
+  // Returns a proxy object for moving from a temporary:
+  //   File file = File(...);
+  operator Proxy() FMT_NOEXCEPT {
+    Proxy p = {fd_};
+    fd_ = -1;
+    return p;
+  }
+
+#else
+ private:
+  FMT_DISALLOW_COPY_AND_ASSIGN(File);
+
+ public:
+  File(File &&other) FMT_NOEXCEPT : fd_(other.fd_) {
+    other.fd_ = -1;
+  }
+
+  File& operator=(File &&other) {
+    close();
+    fd_ = other.fd_;
+    other.fd_ = -1;
+    return *this;
+  }
+#endif
+
+  // Destroys the object closing the file it represents if any.
+  FMT_API ~File() FMT_NOEXCEPT;
+
+  // Returns the file descriptor.
+  int descriptor() const FMT_NOEXCEPT { return fd_; }
+
+  // Closes the file.
+  FMT_API void close();
+
+  // Returns the file size. The size has signed type for consistency with
+  // stat::st_size.
+  FMT_API LongLong size() const;
+
+  // Attempts to read count bytes from the file into the specified buffer.
+  FMT_API std::size_t read(void *buffer, std::size_t count);
+
+  // Attempts to write count bytes from the specified buffer to the file.
+  FMT_API std::size_t write(const void *buffer, std::size_t count);
+
+  // Duplicates a file descriptor with the dup function and returns
+  // the duplicate as a file object.
+  FMT_API static File dup(int fd);
+
+  // Makes fd be the copy of this file descriptor, closing fd first if
+  // necessary.
+  FMT_API void dup2(int fd);
+
+  // Makes fd be the copy of this file descriptor, closing fd first if
+  // necessary.
+  FMT_API void dup2(int fd, ErrorCode &ec) FMT_NOEXCEPT;
+
+  // Creates a pipe setting up read_end and write_end file objects for reading
+  // and writing respectively.
+  FMT_API static void pipe(File &read_end, File &write_end);
+
+  // Creates a BufferedFile object associated with this file and detaches
+  // this File object from the file.
+  FMT_API BufferedFile fdopen(const char *mode);
+};
+
+// Returns the memory page size.
+long getpagesize();
+
+#if (defined(LC_NUMERIC_MASK) || defined(_MSC_VER)) && \
+    !defined(__ANDROID__) && !defined(__CYGWIN__)
+# define FMT_LOCALE
+#endif
+
+#ifdef FMT_LOCALE
+// A "C" numeric locale.
+class Locale {
+ private:
+# ifdef _MSC_VER
+  typedef _locale_t locale_t;
+
+  enum { LC_NUMERIC_MASK = LC_NUMERIC };
+
+  static locale_t newlocale(int category_mask, const char *locale, locale_t) {
+    return _create_locale(category_mask, locale);
+  }
+
+  static void freelocale(locale_t locale) {
+    _free_locale(locale);
+  }
+
+  static double strtod_l(const char *nptr, char **endptr, _locale_t locale) {
+    return _strtod_l(nptr, endptr, locale);
+  }
+# endif
+
+  locale_t locale_;
+
+  FMT_DISALLOW_COPY_AND_ASSIGN(Locale);
+
+ public:
+  typedef locale_t Type;
+
+  Locale() : locale_(newlocale(LC_NUMERIC_MASK, "C", FMT_NULL)) {
+    if (!locale_)
+      FMT_THROW(fmt::SystemError(errno, "cannot create locale"));
+  }
+  ~Locale() { freelocale(locale_); }
+
+  Type get() const { return locale_; }
+
+  // Converts string to floating-point number and advances str past the end
+  // of the parsed input.
+  double strtod(const char *&str) const {
+    char *end = FMT_NULL;
+    double result = strtod_l(str, &end, locale_);
+    str = end;
+    return result;
+  }
+};
+#endif  // FMT_LOCALE
+}  // namespace fmt
+
+#if !FMT_USE_RVALUE_REFERENCES
+namespace std {
+// For compatibility with C++98.
+inline fmt::BufferedFile &move(fmt::BufferedFile &f) { return f; }
+inline fmt::File &move(fmt::File &f) { return f; }
+}
+#endif
+
+#endif  // FMT_POSIX_H_

include/spdlog/fmt/bundled/printf.h

@@ -1,658 +0,0 @@
-/*
-Formatting library for C++
-
-Copyright (c) 2012 - 2016, Victor Zverovich
-All rights reserved.
-
-For the license information refer to format.h.
-*/
-
-#ifndef FMT_PRINTF_H_
-#define FMT_PRINTF_H_
-
-#include <algorithm>  // std::fill_n
-#include <limits>     // std::numeric_limits
-
-#include "ostream.h"
-
-namespace fmt
-{
-namespace internal
-{
-
-// Checks if a value fits in int - used to avoid warnings about comparing
-// signed and unsigned integers.
-template <bool IsSigned>
-struct IntChecker
-{
-    template <typename T>
-    static bool fits_in_int(T value)
-    {
-        unsigned max = std::numeric_limits<int>::max();
-        return value <= max;
-    }
-    static bool fits_in_int(bool)
-    {
-        return true;
-    }
-};
-
-template <>
-struct IntChecker<true>
-{
-    template <typename T>
-    static bool fits_in_int(T value)
-    {
-        return value >= std::numeric_limits<int>::min() &&
-               value <= std::numeric_limits<int>::max();
-    }
-    static bool fits_in_int(int)
-    {
-        return true;
-    }
-};
-
-class PrecisionHandler: public ArgVisitor<PrecisionHandler, int>
-{
-public:
-    void report_unhandled_arg()
-    {
-        FMT_THROW(FormatError("precision is not integer"));
-    }
-
-    template <typename T>
-    int visit_any_int(T value)
-    {
-        if (!IntChecker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
-            FMT_THROW(FormatError("number is too big"));
-        return static_cast<int>(value);
-    }
-};
-
-// IsZeroInt::visit(arg) returns true iff arg is a zero integer.
-class IsZeroInt: public ArgVisitor<IsZeroInt, bool>
-{
-public:
-    template <typename T>
-    bool visit_any_int(T value)
-    {
-        return value == 0;
-    }
-};
-
-template <typename T, typename U>
-struct is_same
-{
-    enum
-    {
-        value = 0
-    };
-};
-
-template <typename T>
-struct is_same<T, T>
-{
-    enum
-    {
-        value = 1
-    };
-};
-
-// An argument visitor that converts an integer argument to T for printf,
-// if T is an integral type. If T is void, the argument is converted to
-// corresponding signed or unsigned type depending on the type specifier:
-// 'd' and 'i' - signed, other - unsigned)
-template <typename T = void>
-class ArgConverter: public ArgVisitor<ArgConverter<T>, void>
-{
-private:
-    internal::Arg &arg_;
-    wchar_t type_;
-
-    FMT_DISALLOW_COPY_AND_ASSIGN(ArgConverter);
-
-public:
-    ArgConverter(internal::Arg &arg, wchar_t type)
-        : arg_(arg), type_(type)
-    {}
-
-    void visit_bool(bool value)
-    {
-        if (type_ != 's')
-            visit_any_int(value);
-    }
-
-    template <typename U>
-    void visit_any_int(U value)
-    {
-        bool is_signed = type_ == 'd' || type_ == 'i';
-        using internal::Arg;
-        typedef typename internal::Conditional<
-        is_same<T, void>::value, U, T>::type TargetType;
-        if (sizeof(TargetType) <= sizeof(int))
-        {
-            // Extra casts are used to silence warnings.
-            if (is_signed)
-            {
-                arg_.type = Arg::INT;
-                arg_.int_value = static_cast<int>(static_cast<TargetType>(value));
-            }
-            else
-            {
-                arg_.type = Arg::UINT;
-                typedef typename internal::MakeUnsigned<TargetType>::Type Unsigned;
-                arg_.uint_value = static_cast<unsigned>(static_cast<Unsigned>(value));
-            }
-        }
-        else
-        {
-            if (is_signed)
-            {
-                arg_.type = Arg::LONG_LONG;
-                // glibc's printf doesn't sign extend arguments of smaller types:
-                //   std::printf("%lld", -42);  // prints "4294967254"
-                // but we don't have to do the same because it's a UB.
-                arg_.long_long_value = static_cast<LongLong>(value);
-            }
-            else
-            {
-                arg_.type = Arg::ULONG_LONG;
-                arg_.ulong_long_value =
-                    static_cast<typename internal::MakeUnsigned<U>::Type>(value);
-            }
-        }
-    }
-};
-
-// Converts an integer argument to char for printf.
-class CharConverter: public ArgVisitor<CharConverter, void>
-{
-private:
-    internal::Arg &arg_;
-
-    FMT_DISALLOW_COPY_AND_ASSIGN(CharConverter);
-
-public:
-    explicit CharConverter(internal::Arg &arg): arg_(arg)
-    {}
-
-    template <typename T>
-    void visit_any_int(T value)
-    {
-        arg_.type = internal::Arg::CHAR;
-        arg_.int_value = static_cast<char>(value);
-    }
-};
-
-// Checks if an argument is a valid printf width specifier and sets
-// left alignment if it is negative.
-class WidthHandler: public ArgVisitor<WidthHandler, unsigned>
-{
-private:
-    FormatSpec &spec_;
-
-    FMT_DISALLOW_COPY_AND_ASSIGN(WidthHandler);
-
-public:
-    explicit WidthHandler(FormatSpec &spec): spec_(spec)
-    {}
-
-    void report_unhandled_arg()
-    {
-        FMT_THROW(FormatError("width is not integer"));
-    }
-
-    template <typename T>
-    unsigned visit_any_int(T value)
-    {
-        typedef typename internal::IntTraits<T>::MainType UnsignedType;
-        UnsignedType width = static_cast<UnsignedType>(value);
-        if (internal::is_negative(value))
-        {
-            spec_.align_ = ALIGN_LEFT;
-            width = 0 - width;
-        }
-        unsigned int_max = std::numeric_limits<int>::max();
-        if (width > int_max)
-            FMT_THROW(FormatError("number is too big"));
-        return static_cast<unsigned>(width);
-    }
-};
-}  // namespace internal
-
-/**
-\rst
-A ``printf`` argument formatter based on the `curiously recurring template
-pattern <http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern>`_.
-
-To use `~fmt::BasicPrintfArgFormatter` define a subclass that implements some
-or all of the visit methods with the same signatures as the methods in
-`~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`.
-Pass the subclass as the *Impl* template parameter. When a formatting
-function processes an argument, it will dispatch to a visit method
-specific to the argument type. For example, if the argument type is
-``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass
-will be called. If the subclass doesn't contain a method with this signature,
-then a corresponding method of `~fmt::BasicPrintfArgFormatter` or its
-superclass will be called.
-\endrst
-*/
-template <typename Impl, typename Char>
-class BasicPrintfArgFormatter: public internal::ArgFormatterBase<Impl, Char>
-{
-private:
-    void write_null_pointer()
-    {
-        this->spec().type_ = 0;
-        this->write("(nil)");
-    }
-
-    typedef internal::ArgFormatterBase<Impl, Char> Base;
-
-public:
-    /**
-    \rst
-    Constructs an argument formatter object.
-    *writer* is a reference to the output writer and *spec* contains format
-    specifier information for standard argument types.
-    \endrst
-    */
-    BasicPrintfArgFormatter(BasicWriter<Char> &w, FormatSpec &s)
-        : internal::ArgFormatterBase<Impl, Char>(w, s)
-    {}
-
-    /** Formats an argument of type ``bool``. */
-    void visit_bool(bool value)
-    {
-        FormatSpec &fmt_spec = this->spec();
-        if (fmt_spec.type_ != 's')
-            return this->visit_any_int(value);
-        fmt_spec.type_ = 0;
-        this->write(value);
-    }
-
-    /** Formats a character. */
-    void visit_char(int value)
-    {
-        const FormatSpec &fmt_spec = this->spec();
-        BasicWriter<Char> &w = this->writer();
-        if (fmt_spec.type_ && fmt_spec.type_ != 'c')
-            w.write_int(value, fmt_spec);
-        typedef typename BasicWriter<Char>::CharPtr CharPtr;
-        CharPtr out = CharPtr();
-        if (fmt_spec.width_ > 1)
-        {
-            Char fill = ' ';
-            out = w.grow_buffer(fmt_spec.width_);
-            if (fmt_spec.align_ != ALIGN_LEFT)
-            {
-                std::fill_n(out, fmt_spec.width_ - 1, fill);
-                out += fmt_spec.width_ - 1;
-            }
-            else
-            {
-                std::fill_n(out + 1, fmt_spec.width_ - 1, fill);
-            }
-        }
-        else
-        {
-            out = w.grow_buffer(1);
-        }
-        *out = static_cast<Char>(value);
-    }
-
-    /** Formats a null-terminated C string. */
-    void visit_cstring(const char *value)
-    {
-        if (value)
-            Base::visit_cstring(value);
-        else if (this->spec().type_ == 'p')
-            write_null_pointer();
-        else
-            this->write("(null)");
-    }
-
-    /** Formats a pointer. */
-    void visit_pointer(const void *value)
-    {
-        if (value)
-            return Base::visit_pointer(value);
-        this->spec().type_ = 0;
-        write_null_pointer();
-    }
-
-    /** Formats an argument of a custom (user-defined) type. */
-    void visit_custom(internal::Arg::CustomValue c)
-    {
-        BasicFormatter<Char> formatter(ArgList(), this->writer());
-        const Char format_str[] = { '}', 0 };
-        const Char *format = format_str;
-        c.format(&formatter, c.value, &format);
-    }
-};
-
-/** The default printf argument formatter. */
-template <typename Char>
-class PrintfArgFormatter
-    : public BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char>
-{
-public:
-    /** Constructs an argument formatter object. */
-    PrintfArgFormatter(BasicWriter<Char> &w, FormatSpec &s)
-        : BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char>(w, s)
-    {}
-};
-
-/** This template formats data and writes the output to a writer. */
-template <typename Char, typename ArgFormatter = PrintfArgFormatter<Char> >
-class PrintfFormatter: private internal::FormatterBase
-{
-private:
-    BasicWriter<Char> &writer_;
-
-    void parse_flags(FormatSpec &spec, const Char *&s);
-
-    // Returns the argument with specified index or, if arg_index is equal
-    // to the maximum unsigned value, the next argument.
-    internal::Arg get_arg(
-        const Char *s,
-        unsigned arg_index = (std::numeric_limits<unsigned>::max)());
-
-    // Parses argument index, flags and width and returns the argument index.
-    unsigned parse_header(const Char *&s, FormatSpec &spec);
-
-public:
-    /**
-    \rst
-    Constructs a ``PrintfFormatter`` object. References to the arguments and
-    the writer are stored in the formatter object so make sure they have
-    appropriate lifetimes.
-    \endrst
-    */
-    explicit PrintfFormatter(const ArgList &al, BasicWriter<Char> &w)
-        : FormatterBase(al), writer_(w)
-    {}
-
-    /** Formats stored arguments and writes the output to the writer. */
-    FMT_API void format(BasicCStringRef<Char> format_str);
-};
-
-template <typename Char, typename AF>
-void PrintfFormatter<Char, AF>::parse_flags(FormatSpec &spec, const Char *&s)
-{
-    for (;;)
-    {
-        switch (*s++)
-        {
-        case '-':
-            spec.align_ = ALIGN_LEFT;
-            break;
-        case '+':
-            spec.flags_ |= SIGN_FLAG | PLUS_FLAG;
-            break;
-        case '0':
-            spec.fill_ = '0';
-            break;
-        case ' ':
-            spec.flags_ |= SIGN_FLAG;
-            break;
-        case '#':
-            spec.flags_ |= HASH_FLAG;
-            break;
-        default:
-            --s;
-            return;
-        }
-    }
-}
-
-template <typename Char, typename AF>
-internal::Arg PrintfFormatter<Char, AF>::get_arg(const Char *s,
-        unsigned arg_index)
-{
-    (void)s;
-    const char *error = FMT_NULL;
-    internal::Arg arg = arg_index == std::numeric_limits<unsigned>::max() ?
-                        next_arg(error) : FormatterBase::get_arg(arg_index - 1, error);
-    if (error)
-        FMT_THROW(FormatError(!*s ? "invalid format string" : error));
-    return arg;
-}
-
-template <typename Char, typename AF>
-unsigned PrintfFormatter<Char, AF>::parse_header(
-    const Char *&s, FormatSpec &spec)
-{
-    unsigned arg_index = std::numeric_limits<unsigned>::max();
-    Char c = *s;
-    if (c >= '0' && c <= '9')
-    {
-        // Parse an argument index (if followed by '$') or a width possibly
-        // preceded with '0' flag(s).
-        unsigned value = internal::parse_nonnegative_int(s);
-        if (*s == '$')    // value is an argument index
-        {
-            ++s;
-            arg_index = value;
-        }
-        else
-        {
-            if (c == '0')
-                spec.fill_ = '0';
-            if (value != 0)
-            {
-                // Nonzero value means that we parsed width and don't need to
-                // parse it or flags again, so return now.
-                spec.width_ = value;
-                return arg_index;
-            }
-        }
-    }
-    parse_flags(spec, s);
-    // Parse width.
-    if (*s >= '0' && *s <= '9')
-    {
-        spec.width_ = internal::parse_nonnegative_int(s);
-    }
-    else if (*s == '*')
-    {
-        ++s;
-        spec.width_ = internal::WidthHandler(spec).visit(get_arg(s));
-    }
-    return arg_index;
-}
-
-template <typename Char, typename AF>
-void PrintfFormatter<Char, AF>::format(BasicCStringRef<Char> format_str)
-{
-    const Char *start = format_str.c_str();
-    const Char *s = start;
-    while (*s)
-    {
-        Char c = *s++;
-        if (c != '%') continue;
-        if (*s == c)
-        {
-            write(writer_, start, s);
-            start = ++s;
-            continue;
-        }
-        write(writer_, start, s - 1);
-
-        FormatSpec spec;
-        spec.align_ = ALIGN_RIGHT;
-
-        // Parse argument index, flags and width.
-        unsigned arg_index = parse_header(s, spec);
-
-        // Parse precision.
-        if (*s == '.')
-        {
-            ++s;
-            if ('0' <= *s && *s <= '9')
-            {
-                spec.precision_ = static_cast<int>(internal::parse_nonnegative_int(s));
-            }
-            else if (*s == '*')
-            {
-                ++s;
-                spec.precision_ = internal::PrecisionHandler().visit(get_arg(s));
-            }
-        }
-
-        using internal::Arg;
-        Arg arg = get_arg(s, arg_index);
-        if (spec.flag(HASH_FLAG) && internal::IsZeroInt().visit(arg))
-            spec.flags_ &= ~internal::to_unsigned<int>(HASH_FLAG);
-        if (spec.fill_ == '0')
-        {
-            if (arg.type <= Arg::LAST_NUMERIC_TYPE)
-                spec.align_ = ALIGN_NUMERIC;
-            else
-                spec.fill_ = ' ';  // Ignore '0' flag for non-numeric types.
-        }
-
-        // Parse length and convert the argument to the required type.
-        using internal::ArgConverter;
-        switch (*s++)
-        {
-        case 'h':
-            if (*s == 'h')
-                ArgConverter<signed char>(arg, *++s).visit(arg);
-            else
-                ArgConverter<short>(arg, *s).visit(arg);
-            break;
-        case 'l':
-            if (*s == 'l')
-                ArgConverter<fmt::LongLong>(arg, *++s).visit(arg);
-            else
-                ArgConverter<long>(arg, *s).visit(arg);
-            break;
-        case 'j':
-            ArgConverter<intmax_t>(arg, *s).visit(arg);
-            break;
-        case 'z':
-            ArgConverter<std::size_t>(arg, *s).visit(arg);
-            break;
-        case 't':
-            ArgConverter<std::ptrdiff_t>(arg, *s).visit(arg);
-            break;
-        case 'L':
-            // printf produces garbage when 'L' is omitted for long double, no
-            // need to do the same.
-            break;
-        default:
-            --s;
-            ArgConverter<void>(arg, *s).visit(arg);
-        }
-
-        // Parse type.
-        if (!*s)
-            FMT_THROW(FormatError("invalid format string"));
-        spec.type_ = static_cast<char>(*s++);
-        if (arg.type <= Arg::LAST_INTEGER_TYPE)
-        {
-            // Normalize type.
-            switch (spec.type_)
-            {
-            case 'i':
-            case 'u':
-                spec.type_ = 'd';
-                break;
-            case 'c':
-                // TODO: handle wchar_t
-                internal::CharConverter(arg).visit(arg);
-                break;
-            }
-        }
-
-        start = s;
-
-        // Format argument.
-        AF(writer_, spec).visit(arg);
-    }
-    write(writer_, start, s);
-}
-
-template <typename Char>
-void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args)
-{
-    PrintfFormatter<Char>(args, w).format(format);
-}
-
-/**
-\rst
-Formats arguments and returns the result as a string.
-
-**Example**::
-
-std::string message = fmt::sprintf("The answer is %d", 42);
-\endrst
-*/
-inline std::string sprintf(CStringRef format, ArgList args)
-{
-    MemoryWriter w;
-    printf(w, format, args);
-    return w.str();
-}
-FMT_VARIADIC(std::string, sprintf, CStringRef)
-
-inline std::wstring sprintf(WCStringRef format, ArgList args)
-{
-    WMemoryWriter w;
-    printf(w, format, args);
-    return w.str();
-}
-FMT_VARIADIC_W(std::wstring, sprintf, WCStringRef)
-
-/**
-\rst
-Prints formatted data to the file *f*.
-
-**Example**::
-
-fmt::fprintf(stderr, "Don't %s!", "panic");
-\endrst
-*/
-FMT_API int fprintf(std::FILE *f, CStringRef format, ArgList args);
-FMT_VARIADIC(int, fprintf, std::FILE *, CStringRef)
-
-/**
-\rst
-Prints formatted data to ``stdout``.
-
-**Example**::
-
-fmt::printf("Elapsed time: %.2f seconds", 1.23);
-\endrst
-*/
-inline int printf(CStringRef format, ArgList args)
-{
-    return fprintf(stdout, format, args);
-}
-FMT_VARIADIC(int, printf, CStringRef)
-
-/**
-\rst
-Prints formatted data to the stream *os*.
-
-**Example**::
-
-fprintf(cerr, "Don't %s!", "panic");
-\endrst
-*/
-inline int fprintf(std::ostream &os, CStringRef format_str, ArgList args)
-{
-    MemoryWriter w;
-    printf(w, format_str, args);
-    internal::write(os, w);
-    return static_cast<int>(w.size());
-}
-FMT_VARIADIC(int, fprintf, std::ostream &, CStringRef)
-}  // namespace fmt
-
-#ifdef FMT_HEADER_ONLY
-# include "printf.cc"
-#endif
-
-#endif  // FMT_PRINTF_H_

include/spdlog/fmt/bundled/time.h

@@ -0,0 +1,143 @@
+/*
+ Formatting library for C++ - time formatting
+
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
+
+ For the license information refer to format.h.
+ */
+
+#ifndef FMT_TIME_H_
+#define FMT_TIME_H_
+
+#include "format.h"
+#include <ctime>
+
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable: 4702)  // unreachable code
+# pragma warning(disable: 4996)  // "deprecated" functions
+#endif
+
+namespace fmt {
+template <typename ArgFormatter>
+void format_arg(BasicFormatter<char, ArgFormatter> &f,
+                const char *&format_str, const std::tm &tm) {
+  if (*format_str == ':')
+    ++format_str;
+  const char *end = format_str;
+  while (*end && *end != '}')
+    ++end;
+  if (*end != '}')
+    FMT_THROW(FormatError("missing '}' in format string"));
+  internal::MemoryBuffer<char, internal::INLINE_BUFFER_SIZE> format;
+  format.append(format_str, end + 1);
+  format[format.size() - 1] = '\0';
+  Buffer<char> &buffer = f.writer().buffer();
+  std::size_t start = buffer.size();
+  for (;;) {
+    std::size_t size = buffer.capacity() - start;
+    std::size_t count = std::strftime(&buffer[start], size, &format[0], &tm);
+    if (count != 0) {
+      buffer.resize(start + count);
+      break;
+    }
+    if (size >= format.size() * 256) {
+      // If the buffer is 256 times larger than the format string, assume
+      // that `strftime` gives an empty result. There doesn't seem to be a
+      // better way to distinguish the two cases:
+      // https://github.com/fmtlib/fmt/issues/367
+      break;
+    }
+    const std::size_t MIN_GROWTH = 10;
+    buffer.reserve(buffer.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
+  }
+  format_str = end + 1;
+}
+
+namespace internal{
+inline Null<> localtime_r(...) { return Null<>(); }
+inline Null<> localtime_s(...) { return Null<>(); }
+inline Null<> gmtime_r(...) { return Null<>(); }
+inline Null<> gmtime_s(...) { return Null<>(); }
+}
+
+// Thread-safe replacement for std::localtime
+inline std::tm localtime(std::time_t time) {
+  struct LocalTime {
+    std::time_t time_;
+    std::tm tm_;
+
+    LocalTime(std::time_t t): time_(t) {}
+
+    bool run() {
+      using namespace fmt::internal;
+      return handle(localtime_r(&time_, &tm_));
+    }
+
+    bool handle(std::tm *tm) { return tm != FMT_NULL; }
+
+    bool handle(internal::Null<>) {
+      using namespace fmt::internal;
+      return fallback(localtime_s(&tm_, &time_));
+    }
+
+    bool fallback(int res) { return res == 0; }
+
+    bool fallback(internal::Null<>) {
+      using namespace fmt::internal;
+      std::tm *tm = std::localtime(&time_);
+      if (tm) tm_ = *tm;
+      return tm != FMT_NULL;
+    }
+  };
+  LocalTime lt(time);
+  if (lt.run())
+    return lt.tm_;
+  // Too big time values may be unsupported.
+  FMT_THROW(fmt::FormatError("time_t value out of range"));
+  return std::tm();
+}
+
+// Thread-safe replacement for std::gmtime
+inline std::tm gmtime(std::time_t time) {
+  struct GMTime {
+    std::time_t time_;
+    std::tm tm_;
+
+    GMTime(std::time_t t): time_(t) {}
+
+    bool run() {
+      using namespace fmt::internal;
+      return handle(gmtime_r(&time_, &tm_));
+    }
+
+    bool handle(std::tm *tm) { return tm != FMT_NULL; }
+
+    bool handle(internal::Null<>) {
+      using namespace fmt::internal;
+      return fallback(gmtime_s(&tm_, &time_));
+    }
+
+    bool fallback(int res) { return res == 0; }
+
+    bool fallback(internal::Null<>) {
+      std::tm *tm = std::gmtime(&time_);
+      if (tm != FMT_NULL) tm_ = *tm;
+      return tm != FMT_NULL;
+    }
+  };
+  GMTime gt(time);
+  if (gt.run())
+    return gt.tm_;
+  // Too big time values may be unsupported.
+  FMT_THROW(fmt::FormatError("time_t value out of range"));
+  return std::tm();
+}
+} //namespace fmt
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+#endif  // FMT_TIME_H_

include/spdlog/fmt/fmt.h

@@ -18,7 +18,7 @@
 #ifndef FMT_USE_WINDOWS_H
 #define FMT_USE_WINDOWS_H 0
 #endif
-#include <spdlog/fmt/bundled/format.h>
+#include "spdlog/fmt/bundled/format.h"
 
 #else //external fmtlib
 

include/spdlog/fmt/ostr.h

@@ -8,8 +8,8 @@
 // include external or bundled copy of fmtlib's ostream support
 //
 #if !defined(SPDLOG_FMT_EXTERNAL)
-#include <spdlog/fmt/fmt.h>
-#include <spdlog/fmt/bundled/ostream.h>
+#include "spdlog/fmt/fmt.h"
+#include "spdlog/fmt/bundled/ostream.h"
 #else
 #include <fmt/ostream.h>
 #endif

include/spdlog/formatter.h

@@ -5,7 +5,7 @@
 
 #pragma once
 
-#include <spdlog/details/log_msg.h>
+#include "spdlog/details/log_msg.h"
 
 #include <vector>
 #include <string>
@@ -25,21 +25,23 @@ public:
     virtual void format(details::log_msg& msg) = 0;
 };
 
-class pattern_formatter : public formatter
+class pattern_formatter SPDLOG_FINAL : public formatter
 {
 
 public:
-    explicit pattern_formatter(const std::string& pattern);
+    explicit pattern_formatter(const std::string& pattern, pattern_time_type pattern_time = pattern_time_type::local);
     pattern_formatter(const pattern_formatter&) = delete;
     pattern_formatter& operator=(const pattern_formatter&) = delete;
     void format(details::log_msg& msg) override;
 private:
     const std::string _pattern;
+    const pattern_time_type _pattern_time;
     std::vector<std::unique_ptr<details::flag_formatter>> _formatters;
+    std::tm get_time(details::log_msg& msg);
     void handle_flag(char flag);
     void compile_pattern(const std::string& pattern);
 };
 }
 
-#include <spdlog/details/pattern_formatter_impl.h>
+#include "spdlog/details/pattern_formatter_impl.h"
 

include/spdlog/logger.h

@@ -12,8 +12,8 @@
 // 2. Format the message using the formatter function
 // 3. Pass the formatted message to its sinks to performa the actual logging
 
-#include <spdlog/sinks/base_sink.h>
-#include <spdlog/common.h>
+#include "spdlog/sinks/base_sink.h"
+#include "spdlog/common.h"
 
 #include <vector>
 #include <memory>
@@ -37,12 +37,41 @@ public:
 
     template <typename... Args> void log(level::level_enum lvl, const char* fmt, const Args&... args);
     template <typename... Args> void log(level::level_enum lvl, const char* msg);
-    template <typename... Args> void trace(const char* fmt, const Args&... args);
-    template <typename... Args> void debug(const char* fmt, const Args&... args);
-    template <typename... Args> void info(const char* fmt, const Args&... args);
-    template <typename... Args> void warn(const char* fmt, const Args&... args);
-    template <typename... Args> void error(const char* fmt, const Args&... args);
-    template <typename... Args> void critical(const char* fmt, const Args&... args);
+    template <typename Arg1, typename... Args> void trace(const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void debug(const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void info(const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void warn(const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void error(const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void critical(const char* fmt, const Arg1&, const Args&... args);
+
+    template <typename... Args> void log_if(const bool flag, level::level_enum lvl, const char* fmt, const Args&... args);
+    template <typename... Args> void log_if(const bool flag, level::level_enum lvl, const char* msg);
+    template <typename Arg1, typename... Args> void trace_if(const bool flag, const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void debug_if(const bool flag, const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void info_if(const bool flag, const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void warn_if(const bool flag, const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void error_if(const bool flag, const char* fmt, const Arg1&, const Args&... args);
+    template <typename Arg1, typename... Args> void critical_if(const bool flag, const char* fmt, const Arg1&, const Args&... args);
+
+#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
+    template <typename... Args> void log(level::level_enum lvl, const wchar_t* msg);
+    template <typename... Args> void log(level::level_enum lvl, const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void trace(const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void debug(const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void info(const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void warn(const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void error(const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void critical(const wchar_t* fmt, const Args&... args);
+
+    template <typename... Args> void log_if(const bool flag, level::level_enum lvl, const wchar_t* msg);
+    template <typename... Args> void log_if(const bool flag, level::level_enum lvl, const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void trace_if(const bool flag, const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void debug_if(const bool flag, const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void info_if(const bool flag, const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void warn_if(const bool flag, const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void error_if(const bool flag, const wchar_t* fmt, const Args&... args);
+    template <typename... Args> void critical_if(const bool flag, const wchar_t* fmt, const Args&... args);
+#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
 
     template <typename T> void log(level::level_enum lvl, const T&);
     template <typename T> void trace(const T&);
@@ -52,17 +81,21 @@ public:
     template <typename T> void error(const T&);
     template <typename T> void critical(const T&);
 
+    template <typename T> void log_if(const bool flag, level::level_enum lvl, const T&);
+    template <typename T> void trace_if(const bool flag, const T&);
+    template <typename T> void debug_if(const bool flag, const T&);
+    template <typename T> void info_if(const bool flag, const T&);
+    template <typename T> void warn_if(const bool flag, const T&);
+    template <typename T> void error_if(const bool flag, const T&);
+    template <typename T> void critical_if(const bool flag, const T&);
+
     bool should_log(level::level_enum) const;
     void set_level(level::level_enum);
     level::level_enum level() const;
     const std::string& name() const;
-    void set_pattern(const std::string&);
+    void set_pattern(const std::string&, pattern_time_type = pattern_time_type::local);
     void set_formatter(formatter_ptr);
 
-    // error handler
-    void set_error_handler(log_err_handler);
-    log_err_handler error_handler();
-
     // automatically call flush() if message level >= log_level
     void flush_on(level::level_enum log_level);
 
@@ -70,9 +103,13 @@ public:
 
     const std::vector<sink_ptr>& sinks() const;
 
+    // error handler
+    virtual void set_error_handler(log_err_handler);
+    virtual log_err_handler error_handler();
+
 protected:
     virtual void _sink_it(details::log_msg&);
-    virtual void _set_pattern(const std::string&);
+    virtual void _set_pattern(const std::string&, pattern_time_type);
     virtual void _set_formatter(formatter_ptr);
 
     // default error handler: print the error to stderr with the max rate of 1 message/minute
@@ -88,7 +125,8 @@ protected:
     spdlog::level_t _flush_level;
     log_err_handler _err_handler;
     std::atomic<time_t> _last_err_time;
+    std::atomic<size_t> _msg_counter;
 };
 }
 
-#include <spdlog/details/logger_impl.h>
+#include "spdlog/details/logger_impl.h"

include/spdlog/sinks/android_sink.h

@@ -7,11 +7,17 @@
 
 #if defined(__ANDROID__)
 
-#include <spdlog/sinks/sink.h>
+#include "spdlog/sinks/sink.h"
 
 #include <mutex>
 #include <string>
 #include <android/log.h>
+#include <thread>
+#include <chrono>
+
+#if !defined(SPDLOG_ANDROID_RETRIES)
+#define SPDLOG_ANDROID_RETRIES 2
+#endif
 
 namespace spdlog
 {
@@ -25,15 +31,23 @@ namespace sinks
 class android_sink : public sink
 {
 public:
-    explicit android_sink(const std::string& tag = "spdlog"): _tag(tag) {}
+    explicit android_sink(const std::string& tag = "spdlog", bool use_raw_msg = false): _tag(tag), _use_raw_msg(use_raw_msg) {}
 
     void log(const details::log_msg& msg) override
     {
         const android_LogPriority priority = convert_to_android(msg.level);
+        const char *msg_output = (_use_raw_msg ? msg.raw.c_str() : msg.formatted.c_str());
+
         // See system/core/liblog/logger_write.c for explanation of return value
-        const int ret = __android_log_write(
-                            priority, _tag.c_str(), msg.formatted.c_str()
-                        );
+        int ret = __android_log_write(priority, _tag.c_str(), msg_output);
+        int retry_count = 0;
+        while ((ret == -11/*EAGAIN*/) && (retry_count < SPDLOG_ANDROID_RETRIES))
+        {
+            std::this_thread::sleep_for(std::chrono::milliseconds(5));
+            ret = __android_log_write(priority, _tag.c_str(), msg_output);
+            retry_count++;
+        }
+
         if (ret < 0)
         {
             throw spdlog_ex("__android_log_write() failed", ret);
@@ -67,6 +81,7 @@ private:
     }
 
     std::string _tag;
+    bool _use_raw_msg;
 };
 
 }

include/spdlog/sinks/ansicolor_sink.h

@@ -1,12 +1,13 @@
 //
-// Copyright(c) 2016 Kevin M. Godby (a modified version by spdlog).
+// Copyright(c) 2017 spdlog authors.
 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
 //
 
 #pragma once
 
-#include <spdlog/sinks/base_sink.h>
-#include <spdlog/common.h>
+#include "spdlog/sinks/base_sink.h"
+#include "spdlog/common.h"
+#include "spdlog/details/os.h"
 
 #include <string>
 #include <map>
@@ -17,99 +18,115 @@ namespace sinks
 {
 
 /**
- * @brief The ansi_color_sink is a decorator around another sink and prefixes
- * the output with an ANSI escape sequence color code depending on the severity
+ * This sink prefixes the output with an ANSI escape sequence color code depending on the severity
  * of the message.
+ * If no color terminal detected, omit the escape codes.
  */
-class ansicolor_sink : public sink
+template <class Mutex>
+class ansicolor_sink: public base_sink<Mutex>
 {
 public:
-    ansicolor_sink(sink_ptr wrapped_sink);
-    virtual ~ansicolor_sink();
+    ansicolor_sink(FILE* file): target_file_(file)
+    {
+        should_do_colors_ = details::os::in_terminal(file) && details::os::is_color_terminal();
+        colors_[level::trace] = cyan;
+        colors_[level::debug] = cyan;
+        colors_[level::info] = reset;
+        colors_[level::warn] = yellow + bold;
+        colors_[level::err] = red + bold;
+        colors_[level::critical] = bold + on_red;
+        colors_[level::off] = reset;
+    }
+    virtual ~ansicolor_sink()
+    {
+        _flush();
+    }
 
-    ansicolor_sink(const ansicolor_sink& other) = delete;
-    ansicolor_sink& operator=(const ansicolor_sink& other) = delete;
-
-    virtual void log(const details::log_msg& msg) override;
-    virtual void flush() override;
-
-    void set_color(level::level_enum color_level, const std::string& color);
+    void set_color(level::level_enum color_level, const std::string& color)
+    {
+        std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
+        colors_[color_level] = color;
+    }
 
     /// Formatting codes
-    const std::string reset      = "\033[00m";
-    const std::string bold       = "\033[1m";
-    const std::string dark       = "\033[2m";
-    const std::string underline  = "\033[4m";
-    const std::string blink      = "\033[5m";
-    const std::string reverse    = "\033[7m";
-    const std::string concealed  = "\033[8m";
+    const std::string reset = "\033[00m";
+    const std::string bold = "\033[1m";
+    const std::string dark = "\033[2m";
+    const std::string underline = "\033[4m";
+    const std::string blink = "\033[5m";
+    const std::string reverse = "\033[7m";
+    const std::string concealed = "\033[8m";
 
     // Foreground colors
-    const std::string grey       = "\033[30m";
-    const std::string red        = "\033[31m";
-    const std::string green      = "\033[32m";
-    const std::string yellow     = "\033[33m";
-    const std::string blue       = "\033[34m";
-    const std::string magenta    = "\033[35m";
-    const std::string cyan       = "\033[36m";
-    const std::string white      = "\033[37m";
+    const std::string grey = "\033[30m";
+    const std::string red = "\033[31m";
+    const std::string green = "\033[32m";
+    const std::string yellow = "\033[33m";
+    const std::string blue = "\033[34m";
+    const std::string magenta = "\033[35m";
+    const std::string cyan = "\033[36m";
+    const std::string white = "\033[37m";
 
     /// Background colors
-    const std::string on_grey    = "\033[40m";
-    const std::string on_red     = "\033[41m";
-    const std::string on_green   = "\033[42m";
-    const std::string on_yellow  = "\033[43m";
-    const std::string on_blue    = "\033[44m";
+    const std::string on_grey = "\033[40m";
+    const std::string on_red = "\033[41m";
+    const std::string on_green = "\033[42m";
+    const std::string on_yellow = "\033[43m";
+    const std::string on_blue = "\033[44m";
     const std::string on_magenta = "\033[45m";
-    const std::string on_cyan    = "\033[46m";
-    const std::string on_white   = "\033[47m";
-
+    const std::string on_cyan = "\033[46m";
+    const std::string on_white = "\033[47m";
 
 protected:
-    sink_ptr sink_;
+    virtual void _sink_it(const details::log_msg& msg) override
+    {
+        // Wrap the originally formatted message in color codes.
+        // If color is not supported in the terminal, log as is instead.
+        if (should_do_colors_)
+        {
+            const std::string& prefix = colors_[msg.level];
+            fwrite(prefix.data(), sizeof(char), prefix.size(), target_file_);
+            fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), target_file_);
+            fwrite(reset.data(), sizeof(char), reset.size(), target_file_);
+        }
+        else
+        {
+            fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), target_file_);
+        }
+        _flush();
+    }
+
+    void _flush() override
+    {
+        fflush(target_file_);
+    }
+    FILE* target_file_;
+    bool should_do_colors_;
     std::map<level::level_enum, std::string> colors_;
 };
 
-inline ansicolor_sink::ansicolor_sink(sink_ptr wrapped_sink) : sink_(wrapped_sink)
-{
-    colors_[level::trace]   = cyan;
-    colors_[level::debug]   = cyan;
-    colors_[level::info]    = bold;
-    colors_[level::warn]    = yellow + bold;
-    colors_[level::err]     = red + bold;
-    colors_[level::critical] = bold + on_red;
-    colors_[level::off]      = reset;
-}
 
-inline void ansicolor_sink::log(const details::log_msg& msg)
+template<class Mutex>
+class ansicolor_stdout_sink: public ansicolor_sink<Mutex>
 {
-    // Wrap the originally formatted message in color codes
-    const std::string& prefix = colors_[msg.level];
-    const std::string& s = msg.formatted.str();
-    const std::string& suffix = reset;
-    details::log_msg m;
-    m.level = msg.level;
-    m.logger_name = msg.logger_name;
-    m.time = msg.time;
-    m.thread_id = msg.thread_id;
-    m.formatted << prefix  << s << suffix;
-    sink_->log(m);
-}
+public:
+    ansicolor_stdout_sink(): ansicolor_sink<Mutex>(stdout)
+    {}
+};
 
-inline void ansicolor_sink::flush()
+template<class Mutex>
+class ansicolor_stderr_sink: public ansicolor_sink<Mutex>
 {
-    sink_->flush();
-}
+public:
+    ansicolor_stderr_sink(): ansicolor_sink<Mutex>(stderr)
+    {}
+};
 
-inline void ansicolor_sink::set_color(level::level_enum color_level, const std::string& color)
-{
-    colors_[color_level] = color;
-}
+typedef ansicolor_stdout_sink<std::mutex> ansicolor_stdout_sink_mt;
+typedef ansicolor_stdout_sink<details::null_mutex> ansicolor_stdout_sink_st;
 
-inline ansicolor_sink::~ansicolor_sink()
-{
-    flush();
-}
+typedef ansicolor_stderr_sink<std::mutex> ansicolor_stderr_sink_mt;
+typedef ansicolor_stderr_sink<details::null_mutex> ansicolor_stderr_sink_st;
 
 } // namespace sinks
 } // namespace spdlog

include/spdlog/sinks/base_sink.h

@@ -5,15 +5,15 @@
 
 #pragma once
 //
-// base sink templated over a mutex (either dummy or realy)
-// concrete implementation should only overrid the _sink_it method.
+// base sink templated over a mutex (either dummy or real)
+// concrete implementation should only override the _sink_it method.
 // all locking is taken care of here so no locking needed by the implementers..
 //
 
-#include <spdlog/sinks/sink.h>
-#include <spdlog/formatter.h>
-#include <spdlog/common.h>
-#include <spdlog/details/log_msg.h>
+#include "spdlog/sinks/sink.h"
+#include "spdlog/formatter.h"
+#include "spdlog/common.h"
+#include "spdlog/details/log_msg.h"
 
 #include <mutex>
 
@@ -31,14 +31,19 @@ public:
     base_sink(const base_sink&) = delete;
     base_sink& operator=(const base_sink&) = delete;
 
-    void log(const details::log_msg& msg) override
+    void log(const details::log_msg& msg) SPDLOG_FINAL override
     {
         std::lock_guard<Mutex> lock(_mutex);
         _sink_it(msg);
     }
+    void flush() SPDLOG_FINAL override
+    {
+        _flush();
+    }
 
 protected:
     virtual void _sink_it(const details::log_msg& msg) = 0;
+    virtual void _flush() = 0;
     Mutex _mutex;
 };
 }

include/spdlog/sinks/dist_sink.h

@@ -5,10 +5,10 @@
 
 #pragma once
 
-#include <spdlog/details/log_msg.h>
-#include <spdlog/details/null_mutex.h>
-#include <spdlog/sinks/base_sink.h>
-#include <spdlog/sinks/sink.h>
+#include "spdlog/details/log_msg.h"
+#include "spdlog/details/null_mutex.h"
+#include "spdlog/sinks/base_sink.h"
+#include "spdlog/sinks/sink.h"
 
 #include <algorithm>
 #include <mutex>
@@ -44,14 +44,16 @@ protected:
         }
     }
 
-public:
-    void flush() override
+    void _flush() override
     {
         std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
         for (auto &sink : _sinks)
             sink->flush();
     }
 
+public:
+
+
     void add_sink(std::shared_ptr<sink> sink)
     {
         std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);

include/spdlog/sinks/file_sinks.h

@@ -5,10 +5,10 @@
 
 #pragma once
 
-#include <spdlog/sinks/base_sink.h>
-#include <spdlog/details/null_mutex.h>
-#include <spdlog/details/file_helper.h>
-#include <spdlog/fmt/fmt.h>
+#include "spdlog/sinks/base_sink.h"
+#include "spdlog/details/null_mutex.h"
+#include "spdlog/details/file_helper.h"
+#include "spdlog/fmt/fmt.h"
 
 #include <algorithm>
 #include <chrono>
@@ -26,17 +26,14 @@ namespace sinks
  * Trivial file sink with single file as target
  */
 template<class Mutex>
-class simple_file_sink : public base_sink < Mutex >
+class simple_file_sink SPDLOG_FINAL : public base_sink < Mutex >
 {
 public:
     explicit simple_file_sink(const filename_t &filename, bool truncate = false):_force_flush(false)
     {
         _file_helper.open(filename, truncate);
     }
-    void flush() override
-    {
-        _file_helper.flush();
-    }
+
     void set_force_flush(bool force_flush)
     {
         _force_flush = force_flush;
@@ -49,6 +46,10 @@ protected:
         if(_force_flush)
             _file_helper.flush();
     }
+    void _flush() override
+    {
+        _file_helper.flush();
+    }
 private:
     details::file_helper _file_helper;
     bool _force_flush;
@@ -61,26 +62,21 @@ typedef simple_file_sink<details::null_mutex> simple_file_sink_st;
  * Rotating file sink based on size
  */
 template<class Mutex>
-class rotating_file_sink : public base_sink < Mutex >
+class rotating_file_sink SPDLOG_FINAL : public base_sink < Mutex >
 {
 public:
-    rotating_file_sink(const filename_t &base_filename, const filename_t &extension,
-                       std::size_t max_size, std::size_t max_files                       ) :
+    rotating_file_sink(const filename_t &base_filename,
+                       std::size_t max_size, std::size_t max_files) :
         _base_filename(base_filename),
-        _extension(extension),
         _max_size(max_size),
         _max_files(max_files),
         _current_size(0),
         _file_helper()
     {
-        _file_helper.open(calc_filename(_base_filename, 0, _extension));
+        _file_helper.open(calc_filename(_base_filename, 0));
         _current_size = _file_helper.size(); //expensive. called only once
     }
 
-    void flush() override
-    {
-        _file_helper.flush();
-    }
 
 protected:
     void _sink_it(const details::log_msg& msg) override
@@ -94,22 +90,27 @@ protected:
         _file_helper.write(msg);
     }
 
+    void _flush() override
+    {
+        _file_helper.flush();
+    }
+
 private:
-    static filename_t calc_filename(const filename_t& filename, std::size_t index, const filename_t& extension)
+    static filename_t calc_filename(const filename_t& filename, std::size_t index)
     {
         std::conditional<std::is_same<filename_t::value_type, char>::value, fmt::MemoryWriter, fmt::WMemoryWriter>::type w;
         if (index)
-            w.write(SPDLOG_FILENAME_T("{}.{}.{}"), filename, index, extension);
+            w.write(SPDLOG_FILENAME_T("{}.{}"), filename, index);
         else
-            w.write(SPDLOG_FILENAME_T("{}.{}"), filename, extension);
+            w.write(SPDLOG_FILENAME_T("{}"), filename);
         return w.str();
     }
 
     // Rotate files:
-    // log.txt -> log.1.txt
-    // log.1.txt -> log2.txt
-    // log.2.txt -> log3.txt
-    // log.3.txt -> delete
+    // log.txt -> log.txt.1
+    // log.txt.1 -> log.txt.2
+    // log.txt.2 -> log.txt.3
+    // lo3.txt.3 -> delete
 
     void _rotate()
     {
@@ -117,8 +118,8 @@ private:
         _file_helper.close();
         for (auto i = _max_files; i > 0; --i)
         {
-            filename_t src = calc_filename(_base_filename, i - 1, _extension);
-            filename_t target = calc_filename(_base_filename, i, _extension);
+            filename_t src = calc_filename(_base_filename, i - 1);
+            filename_t target = calc_filename(_base_filename, i);
 
             if (details::file_helper::file_exists(target))
             {
@@ -135,7 +136,6 @@ private:
         _file_helper.reopen(true);
     }
     filename_t _base_filename;
-    filename_t _extension;
     std::size_t _max_size;
     std::size_t _max_files;
     std::size_t _current_size;
@@ -150,27 +150,27 @@ typedef rotating_file_sink<details::null_mutex>rotating_file_sink_st;
  */
 struct default_daily_file_name_calculator
 {
-    // Create filename for the form basename.YYYY-MM-DD_hh-mm.extension
-    static filename_t calc_filename(const filename_t& basename, const filename_t& extension)
+    // Create filename for the form basename.YYYY-MM-DD_hh-mm
+    static filename_t calc_filename(const filename_t& basename)
     {
         std::tm tm = spdlog::details::os::localtime();
         std::conditional<std::is_same<filename_t::value_type, char>::value, fmt::MemoryWriter, fmt::WMemoryWriter>::type w;
-        w.write(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}_{:02d}-{:02d}.{}"), basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, extension);
+        w.write(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}_{:02d}-{:02d}"), basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min);
         return w.str();
     }
 };
 
 /*
- * Generator of daily log file names in format basename.YYYY-MM-DD.extension
+ * Generator of daily log file names in format basename.YYYY-MM-DD
  */
 struct dateonly_daily_file_name_calculator
 {
-    // Create filename for the form basename.YYYY-MM-DD.extension
-    static filename_t calc_filename(const filename_t& basename, const filename_t& extension)
+    // Create filename for the form basename.YYYY-MM-DD
+    static filename_t calc_filename(const filename_t& basename)
     {
         std::tm tm = spdlog::details::os::localtime();
         std::conditional<std::is_same<filename_t::value_type, char>::value, fmt::MemoryWriter, fmt::WMemoryWriter>::type w;
-        w.write(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}.{}"), basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, extension);
+        w.write(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}"), basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
         return w.str();
     }
 };
@@ -179,41 +179,40 @@ struct dateonly_daily_file_name_calculator
  * Rotating file sink based on date. rotates at midnight
  */
 template<class Mutex, class FileNameCalc = default_daily_file_name_calculator>
-class daily_file_sink :public base_sink < Mutex >
+class daily_file_sink SPDLOG_FINAL :public base_sink < Mutex >
 {
 public:
     //create daily file sink which rotates on given time
     daily_file_sink(
         const filename_t& base_filename,
-        const filename_t& extension,
         int rotation_hour,
         int rotation_minute) : _base_filename(base_filename),
-        _extension(extension),
         _rotation_h(rotation_hour),
         _rotation_m(rotation_minute)
     {
         if (rotation_hour < 0 || rotation_hour > 23 || rotation_minute < 0 || rotation_minute > 59)
             throw spdlog_ex("daily_file_sink: Invalid rotation time in ctor");
         _rotation_tp = _next_rotation_tp();
-        _file_helper.open(FileNameCalc::calc_filename(_base_filename, _extension));
+        _file_helper.open(FileNameCalc::calc_filename(_base_filename));
     }
 
-    void flush() override
-    {
-        _file_helper.flush();
-    }
 
 protected:
     void _sink_it(const details::log_msg& msg) override
     {
         if (std::chrono::system_clock::now() >= _rotation_tp)
         {
-            _file_helper.open(FileNameCalc::calc_filename(_base_filename, _extension));
+            _file_helper.open(FileNameCalc::calc_filename(_base_filename));
             _rotation_tp = _next_rotation_tp();
         }
         _file_helper.write(msg);
     }
 
+    void _flush() override
+    {
+        _file_helper.flush();
+    }
+
 private:
     std::chrono::system_clock::time_point _next_rotation_tp()
     {
@@ -231,7 +230,6 @@ private:
     }
 
     filename_t _base_filename;
-    filename_t _extension;
     int _rotation_h;
     int _rotation_m;
     std::chrono::system_clock::time_point _rotation_tp;

include/spdlog/sinks/msvc_sink.h

@@ -7,8 +7,8 @@
 
 #if defined(_MSC_VER)
 
-#include <spdlog/sinks/base_sink.h>
-#include <spdlog/details/null_mutex.h>
+#include "spdlog/sinks/base_sink.h"
+#include "spdlog/details/null_mutex.h"
 
 #include <WinBase.h>
 
@@ -30,15 +30,16 @@ public:
     {
     }
 
-    void flush() override
-    {
-    }
+
 
 protected:
     void _sink_it(const details::log_msg& msg) override
     {
         OutputDebugStringA(msg.formatted.c_str());
     }
+
+    void _flush() override
+    {}
 };
 
 typedef msvc_sink<std::mutex> msvc_sink_mt;

include/spdlog/sinks/null_sink.h

@@ -5,8 +5,8 @@
 
 #pragma once
 
-#include <spdlog/sinks/base_sink.h>
-#include <spdlog/details/null_mutex.h>
+#include "spdlog/sinks/base_sink.h"
+#include "spdlog/details/null_mutex.h"
 
 #include <mutex>
 
@@ -22,7 +22,7 @@ protected:
     void _sink_it(const details::log_msg&) override
     {}
 
-    void flush() override
+    void _flush() override
     {}
 
 };

include/spdlog/sinks/ostream_sink.h

@@ -5,8 +5,8 @@
 
 #pragma once
 
-#include <spdlog/details/null_mutex.h>
-#include <spdlog/sinks/base_sink.h>
+#include "spdlog/details/null_mutex.h"
+#include "spdlog/sinks/base_sink.h"
 
 #include <ostream>
 #include <mutex>
@@ -32,7 +32,7 @@ protected:
             _ostream.flush();
     }
 
-    void flush() override
+    void _flush() override
     {
         _ostream.flush();
     }

include/spdlog/sinks/sink.h

@@ -6,7 +6,7 @@
 
 #pragma once
 
-#include <spdlog/details/log_msg.h>
+#include "spdlog/details/log_msg.h"
 
 namespace spdlog
 {

include/spdlog/sinks/stdout_sinks.h

@@ -5,8 +5,8 @@
 
 #pragma once
 
-#include <spdlog/details/null_mutex.h>
-#include <spdlog/sinks/base_sink.h>
+#include "spdlog/details/null_mutex.h"
+#include "spdlog/sinks/base_sink.h"
 
 #include <cstdio>
 #include <memory>
@@ -18,7 +18,7 @@ namespace sinks
 {
 
 template <class Mutex>
-class stdout_sink: public base_sink<Mutex>
+class stdout_sink SPDLOG_FINAL : public base_sink<Mutex>
 {
     using MyType = stdout_sink<Mutex>;
 public:
@@ -29,14 +29,14 @@ public:
         static std::shared_ptr<MyType> instance = std::make_shared<MyType>();
         return instance;
     }
-
+protected:
     void _sink_it(const details::log_msg& msg) override
     {
         fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), stdout);
-        flush();
+        _flush();
     }
 
-    void flush() override
+    void _flush() override
     {
         fflush(stdout);
     }
@@ -47,7 +47,7 @@ typedef stdout_sink<std::mutex> stdout_sink_mt;
 
 
 template <class Mutex>
-class stderr_sink: public base_sink<Mutex>
+class stderr_sink SPDLOG_FINAL : public base_sink<Mutex>
 {
     using MyType = stderr_sink<Mutex>;
 public:
@@ -58,14 +58,14 @@ public:
         static std::shared_ptr<MyType> instance = std::make_shared<MyType>();
         return instance;
     }
-
+protected:
     void _sink_it(const details::log_msg& msg) override
     {
         fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), stderr);
-        flush();
+        _flush();
     }
 
-    void flush() override
+    void _flush() override
     {
         fflush(stderr);
     }

include/spdlog/sinks/syslog_sink.h

@@ -5,12 +5,12 @@
 
 #pragma once
 
-#include <spdlog/common.h>
+#include "spdlog/common.h"
 
 #ifdef SPDLOG_ENABLE_SYSLOG
 
-#include <spdlog/sinks/sink.h>
-#include <spdlog/details/log_msg.h>
+#include "spdlog/sinks/sink.h"
+#include "spdlog/details/log_msg.h"
 
 #include <array>
 #include <string>

include/spdlog/sinks/wincolor_sink.h

@@ -5,9 +5,9 @@
 
 #pragma once
 
-#include <spdlog/sinks/base_sink.h>
-#include <spdlog/details/null_mutex.h>
-#include <spdlog/common.h>
+#include "spdlog/sinks/base_sink.h"
+#include "spdlog/details/null_mutex.h"
+#include "spdlog/common.h"
 
 #include <mutex>
 #include <string>
@@ -44,12 +44,13 @@ public:
 
     virtual ~wincolor_sink()
     {
-        flush();
+        this->flush();
     }
 
     wincolor_sink(const wincolor_sink& other) = delete;
     wincolor_sink& operator=(const wincolor_sink& other) = delete;
 
+protected:
     virtual void _sink_it(const details::log_msg& msg) override
     {
         auto color = colors_[msg.level];
@@ -58,7 +59,7 @@ public:
         SetConsoleTextAttribute(out_handle_, orig_attribs); //reset to orig colors
     }
 
-    virtual void flush() override
+    virtual void _flush() override
     {
         // windows console always flushed?
     }
@@ -79,7 +80,11 @@ private:
     {
         CONSOLE_SCREEN_BUFFER_INFO orig_buffer_info;
         GetConsoleScreenBufferInfo(out_handle_, &orig_buffer_info);
-        SetConsoleTextAttribute(out_handle_, attribs);
+        WORD back_color = orig_buffer_info.wAttributes;
+        // retrieve the current background color
+        back_color &= ~(FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY);
+        // keep the background color unchanged
+        SetConsoleTextAttribute(out_handle_, attribs | back_color);
         return  orig_buffer_info.wAttributes; //return orig attribs
     }
 };

include/spdlog/spdlog.h

@@ -7,11 +7,11 @@
 
 #pragma once
 
-#define SPDLOG_VERSION "0.12.0"
+#define SPDLOG_VERSION "0.14.0"
 
-#include <spdlog/tweakme.h>
-#include <spdlog/common.h>
-#include <spdlog/logger.h>
+#include "spdlog/tweakme.h"
+#include "spdlog/common.h"
+#include "spdlog/logger.h"
 
 #include <memory>
 #include <functional>
@@ -69,7 +69,7 @@ void set_sync_mode();
 
 //
 // Create and register multi/single threaded basic file logger.
-// Basic logger simply writes to given file without any limitatons or rotations.
+// Basic logger simply writes to given file without any limitations or rotations.
 //
 std::shared_ptr<logger> basic_logger_mt(const std::string& logger_name, const filename_t& filename, bool truncate = false);
 std::shared_ptr<logger> basic_logger_st(const std::string& logger_name, const filename_t& filename, bool truncate = false);
@@ -113,7 +113,7 @@ std::shared_ptr<logger> syslog_logger(const std::string& logger_name, const std:
 std::shared_ptr<logger> android_logger(const std::string& logger_name, const std::string& tag = "spdlog");
 #endif
 
-// Create and register a logger a single sink
+// Create and register a logger with a single sink
 std::shared_ptr<logger> create(const std::string& logger_name, const sink_ptr& sink);
 
 // Create and register a logger with multiple sinks
@@ -124,10 +124,17 @@ std::shared_ptr<logger> create(const std::string& logger_name, const It& sinks_b
 
 // Create and register a logger with templated sink type
 // Example:
-// spdlog::create<daily_file_sink_st>("mylog", "dailylog_filename", "txt");
+// spdlog::create<daily_file_sink_st>("mylog", "dailylog_filename");
 template <typename Sink, typename... Args>
 std::shared_ptr<spdlog::logger> create(const std::string& logger_name, Args...);
 
+// Create and register an async logger with a single sink
+std::shared_ptr<logger> create_async(const std::string& logger_name, const sink_ptr& sink, size_t queue_size, const async_overflow_policy overflow_policy = async_overflow_policy::block_retry, const std::function<void()>& worker_warmup_cb = nullptr, const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(), const std::function<void()>& worker_teardown_cb = nullptr);
+
+// Create and register an async logger with multiple sinks
+std::shared_ptr<logger> create_async(const std::string& logger_name, sinks_init_list sinks, size_t queue_size, const async_overflow_policy overflow_policy = async_overflow_policy::block_retry, const std::function<void()>& worker_warmup_cb = nullptr, const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(), const std::function<void()>& worker_teardown_cb = nullptr);
+template<class It>
+std::shared_ptr<logger> create_async(const std::string& logger_name, const It& sinks_begin, const It& sinks_end, size_t queue_size, const async_overflow_policy overflow_policy = async_overflow_policy::block_retry, const std::function<void()>& worker_warmup_cb = nullptr, const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(), const std::function<void()>& worker_teardown_cb = nullptr);
 
 // Register the given logger with the given name
 void register_logger(std::shared_ptr<logger> logger);
@@ -155,24 +162,28 @@ void drop_all();
 // SPDLOG_TRACE(my_logger, "some trace message");
 // SPDLOG_TRACE(my_logger, "another trace message {} {}", 1, 2);
 // SPDLOG_DEBUG(my_logger, "some debug message {} {}", 3, 4);
+// SPDLOG_DEBUG_IF(my_logger, true, "some debug message {} {}", 3, 4);
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifdef SPDLOG_TRACE_ON
 #define SPDLOG_STR_H(x) #x
 #define SPDLOG_STR_HELPER(x) SPDLOG_STR_H(x)
 #define SPDLOG_TRACE(logger, ...) logger->trace("[" __FILE__ " line #" SPDLOG_STR_HELPER(__LINE__) "] " __VA_ARGS__)
+#define SPDLOG_TRACE_IF(logger, flag, ...) logger->trace_if(flag, "[" __FILE__ " line #" SPDLOG_STR_HELPER(__LINE__) "] " __VA_ARGS__)
 #else
 #define SPDLOG_TRACE(logger, ...)
+#define SPDLOG_TRACE_IF(logger, flag, ...)
 #endif
 
 #ifdef SPDLOG_DEBUG_ON
 #define SPDLOG_DEBUG(logger, ...) logger->debug(__VA_ARGS__)
+#define SPDLOG_DEBUG_IF(logger, flag, ...) logger->debug_if(flag, __VA_ARGS__)
 #else
 #define SPDLOG_DEBUG(logger, ...)
+#define SPDLOG_DEBUG_IF(logger, flag, ...)
 #endif
 
-
 }
 
 
-#include <spdlog/details/spdlog_impl.h>
+#include "spdlog/details/spdlog_impl.h"

include/spdlog/tweakme.h

@@ -73,12 +73,14 @@
 // #define SPDLOG_NO_ATOMIC_LEVELS
 ///////////////////////////////////////////////////////////////////////////////
 
+
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment to enable usage of wchar_t for file names on Windows.
 //
 // #define SPDLOG_WCHAR_FILENAMES
 ///////////////////////////////////////////////////////////////////////////////
 
+
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment to override default eol ("\n" or "\r\n" under Linux/Windows)
 //
@@ -101,8 +103,39 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to enable wchar_t support (convert to utf8)
+//
+// #define SPDLOG_WCHAR_TO_UTF8_SUPPORT
+///////////////////////////////////////////////////////////////////////////////
+
+
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment to prevent child processes from inheriting log file descriptors
 //
 // #define SPDLOG_PREVENT_CHILD_FD
 ///////////////////////////////////////////////////////////////////////////////
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to mark some types as final, allowing more optimizations in release
+// mode with recent compilers. See GCC's documentation for -Wsuggest-final-types
+// for instance.
+//
+// #define SPDLOG_FINAL final
+///////////////////////////////////////////////////////////////////////////////
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to enable message counting feature. Adds %i logger pattern that
+// prints log message sequence id.
+//
+// #define SPDLOG_ENABLE_MESSAGE_COUNTER
+///////////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to enable user defined tag names
+//
+// #define SPDLOG_LEVEL_NAMES  { "   TRACE", "   DEBUG", "    INFO",
+// " WARNING", "   ERROR", "CRITICAL", "OFF" };
+///////////////////////////////////////////////////////////////////////////////

tests/CMakeLists.txt

@@ -10,7 +10,7 @@ find_package(Threads)
 add_library(catch INTERFACE)
 target_include_directories(catch INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
 
-file(GLOB catch_tests LIST_DIRECTORIES false RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+file(GLOB catch_tests LIST_DIRECTORIES false RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp *.h *.hpp)
 
 add_executable(catch_tests ${catch_tests})
 target_link_libraries(catch_tests spdlog ${CMAKE_THREAD_LIBS_INIT})

tests/cond_logging.cpp

@@ -0,0 +1,154 @@
+
+#include "includes.h"
+
+template<class T>
+std::string conditional_log(const bool flag, const T& what, spdlog::level::level_enum logger_level)
+{
+    std::ostringstream oss;
+    auto oss_sink = std::make_shared<spdlog::sinks::ostream_sink_mt>(oss);
+
+    spdlog::logger oss_logger("oss", oss_sink);
+    oss_logger.set_level(logger_level);
+    oss_logger.set_pattern("%v");
+
+    switch (logger_level)
+    {
+    case spdlog::level::trace:
+        oss_logger.trace_if(flag, what);
+        break;
+    case spdlog::level::debug:
+        oss_logger.debug_if(flag, what);
+        break;
+    case spdlog::level::info:
+        oss_logger.info_if(flag, what);
+        break;
+    case spdlog::level::warn:
+        oss_logger.warn_if(flag, what);
+        break;
+    case spdlog::level::err:
+        oss_logger.error_if(flag, what);
+        break;
+    case spdlog::level::critical:
+        oss_logger.critical_if(flag, what);
+        break;
+    default:
+        break;
+    }
+
+    return oss.str().substr(0, oss.str().length() - spdlog::details::os::eol_size);
+}
+
+template <typename Arg1, typename... Args>
+std::string conditional_log_varags(spdlog::level::level_enum logger_level, const bool flag, const char* fmt, const Arg1& arg1, const Args&... args)
+{
+    std::ostringstream oss;
+    auto oss_sink = std::make_shared<spdlog::sinks::ostream_sink_mt>(oss);
+
+    spdlog::logger oss_logger("oss", oss_sink);
+    oss_logger.set_level(logger_level);
+    oss_logger.set_pattern("%v");
+
+    switch (logger_level)
+    {
+    case spdlog::level::trace:
+        oss_logger.trace_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::debug:
+        oss_logger.debug_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::info:
+        oss_logger.info_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::warn:
+        oss_logger.warn_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::err:
+        oss_logger.error_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::critical:
+        oss_logger.critical_if(flag, fmt, arg1, args...);
+        break;
+    default:
+        break;
+    }
+
+    return oss.str().substr(0, oss.str().length() - spdlog::details::os::eol_size);
+}
+
+#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
+
+template <typename Arg1, typename... Args>
+std::wstring conditional_log_varags(spdlog::level::level_enum logger_level, const bool flag, const wchar_t* fmt, const Arg1& arg1, const Args&... args)
+{
+    std::wstringstream oss;
+    auto oss_sink = std::make_shared<spdlog::sinks::ostream_sink_mt>(oss);
+
+    spdlog::logger oss_logger("oss", oss_sink);
+    oss_logger.set_level(logger_level);
+    oss_logger.set_pattern("%v");
+
+    switch (logger_level)
+    {
+    case spdlog::level::trace:
+        oss_logger.trace_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::debug:
+        oss_logger.debug_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::info:
+        oss_logger.info_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::warn:
+        oss_logger.warn_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::err:
+        oss_logger.error_if(flag, fmt, arg1, args...);
+        break;
+    case spdlog::level::critical:
+        oss_logger.critical_if(flag, fmt, arg1, args...);
+        break;
+    default:
+        break;
+    }
+
+    return oss.str().substr(0, oss.str().length() - spdlog::details::os::eol_size);
+}
+
+#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
+
+TEST_CASE("conditional_trace_simple", "[conditional_trace_simple]")
+{
+    //const char
+    for (auto i = 0; i < 2; i++)
+    {
+        REQUIRE(conditional_log((i % 2 == 0), "Hello", spdlog::level::trace) == ( i % 2 == 0 ? "Hello" : ""));
+        REQUIRE(conditional_log((i % 2 == 0), "Hello", spdlog::level::debug) == (i % 2 == 0 ? "Hello" : ""));
+        REQUIRE(conditional_log((i % 2 == 0), "Hello", spdlog::level::info) == (i % 2 == 0 ? "Hello" : ""));
+        REQUIRE(conditional_log((i % 2 == 0), "Hello", spdlog::level::warn) == (i % 2 == 0 ? "Hello" : ""));
+        REQUIRE(conditional_log((i % 2 == 0), "Hello", spdlog::level::err) == (i % 2 == 0 ? "Hello" : ""));
+        REQUIRE(conditional_log((i % 2 == 0), "Hello", spdlog::level::critical) == (i % 2 == 0 ? "Hello" : ""));
+    }
+}
+
+TEST_CASE("conditional_trace_varargs", "[conditional_trace_varargs]")
+{
+    //const char
+    for (auto i = 0; i < 2; i++)
+    {
+        REQUIRE(conditional_log_varags(spdlog::level::trace, (i % 2 == 0), "Hello {}", i) == (i % 2 == 0 ? "Hello " + std::to_string(i) : ""));
+        REQUIRE(conditional_log_varags(spdlog::level::debug, (i % 2 == 0), "Hello {}", i) == (i % 2 == 0 ? "Hello " + std::to_string(i) : ""));
+        REQUIRE(conditional_log_varags(spdlog::level::info, (i % 2 == 0), "Hello {}", i) == (i % 2 == 0 ? "Hello " + std::to_string(i) : ""));
+        REQUIRE(conditional_log_varags(spdlog::level::warn, (i % 2 == 0), "Hello {}", i) == (i % 2 == 0 ? "Hello " + std::to_string(i) : ""));
+        REQUIRE(conditional_log_varags(spdlog::level::err, (i % 2 == 0), "Hello {}", i) == (i % 2 == 0 ? "Hello " + std::to_string(i) : ""));
+        REQUIRE(conditional_log_varags(spdlog::level::critical, (i % 2 == 0), "Hello {}", i) == (i % 2 == 0 ? "Hello " + std::to_string(i) : ""));
+
+#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
+        REQUIRE(conditional_log_varags(spdlog::level::trace, (i % 2 == 0), L"Hello {}", i) == (i % 2 == 0 ? L"Hello " + std::to_wstring(i) : L""));
+        REQUIRE(conditional_log_varags(spdlog::level::debug, (i % 2 == 0), L"Hello {}", i) == (i % 2 == 0 ? L"Hello " + std::to_wstring(i) : L""));
+        REQUIRE(conditional_log_varags(spdlog::level::info, (i % 2 == 0), L"Hello {}", i) == (i % 2 == 0 ? L"Hello " + std::to_wstring(i) : L""));
+        REQUIRE(conditional_log_varags(spdlog::level::warn, (i % 2 == 0), L"Hello {}", i) == (i % 2 == 0 ? L"Hello " + std::to_wstring(i) : L""));
+        REQUIRE(conditional_log_varags(spdlog::level::err, (i % 2 == 0), L"Hello {}", i) == (i % 2 == 0 ? L"Hello " + std::to_wstring(i) : L""));
+        REQUIRE(conditional_log_varags(spdlog::level::critical, (i % 2 == 0), L"Hello {}", i) == (i % 2 == 0 ? L"Hello " + std::to_wstring(i) : L""));
+#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
+    }
+}

tests/errors.cpp

@@ -6,6 +6,19 @@
 #include<iostream>
 
 
+
+
+class failing_sink: public spdlog::sinks::sink
+{
+    void log(const spdlog::details::log_msg& msg) override
+    {
+        throw std::runtime_error("some error happened during log");
+    }
+
+    void flush()
+    {}
+};
+
 TEST_CASE("default_error_handler", "[errors]]")
 {
     prepare_logdir();
@@ -22,7 +35,10 @@ TEST_CASE("default_error_handler", "[errors]]")
 }
 
 
-struct custom_ex {};
+
+
+struct custom_ex
+{};
 TEST_CASE("custom_error_handler", "[errors]]")
 {
     prepare_logdir();
@@ -39,6 +55,17 @@ TEST_CASE("custom_error_handler", "[errors]]")
     REQUIRE(count_lines(filename) == 2);
 }
 
+TEST_CASE("default_error_handler2", "[errors]]")
+{
+
+    auto logger = spdlog::create<failing_sink>("failed_logger");
+    logger->set_error_handler([=](const std::string& msg)
+    {
+        throw custom_ex();
+    });
+    REQUIRE_THROWS_AS(logger->info("Some message"), custom_ex);
+}
+
 TEST_CASE("async_error_handler", "[errors]]")
 {
     prepare_logdir();
@@ -62,3 +89,25 @@ TEST_CASE("async_error_handler", "[errors]]")
     REQUIRE(count_lines(filename) == 2);
     REQUIRE(file_contents("logs/custom_err.txt") == err_msg);
 }
+
+// Make sure async error handler is executed
+TEST_CASE("async_error_handler2", "[errors]]")
+{
+    prepare_logdir();
+    std::string err_msg("This is async handler error message");
+    spdlog::set_async_mode(128);
+    {
+        auto logger = spdlog::create<failing_sink>("failed_logger");
+        logger->set_error_handler([=](const std::string& msg)
+        {
+            std::ofstream ofs("logs/custom_err2.txt");
+            if (!ofs) throw std::runtime_error("Failed open logs/custom_err2.txt");
+            ofs << err_msg;
+        });
+        logger->info("Hello failure");
+        spdlog::drop("failed_logger"); //force logger to drain the queue and shutdown
+        spdlog::set_sync_mode();
+    }
+
+    REQUIRE(file_contents("logs/custom_err2.txt") == err_msg);
+}

tests/file_log.cpp

@@ -7,7 +7,7 @@
 TEST_CASE("simple_file_logger", "[simple_logger]]")
 {
     prepare_logdir();
-    std::string filename = "logs/simple_log.txt";
+    std::string filename = "logs/simple_log";
 
     auto logger = spdlog::create<spdlog::sinks::simple_file_sink_mt>("logger", filename);
     logger->set_pattern("%v");
@@ -24,7 +24,7 @@ TEST_CASE("simple_file_logger", "[simple_logger]]")
 TEST_CASE("flush_on", "[flush_on]]")
 {
     prepare_logdir();
-    std::string filename = "logs/simple_log.txt";
+    std::string filename = "logs/simple_log";
 
     auto logger = spdlog::create<spdlog::sinks::simple_file_sink_mt>("logger", filename);
     logger->set_pattern("%v");
@@ -50,7 +50,7 @@ TEST_CASE("rotating_file_logger1", "[rotating_logger]]")
         logger->info("Test message {}", i);
 
     logger->flush();
-    auto filename = basename + ".txt";
+    auto filename = basename;
     REQUIRE(count_lines(filename) == 10);
 }
 
@@ -64,14 +64,14 @@ TEST_CASE("rotating_file_logger2", "[rotating_logger]]")
         logger->info("Test message {}", i);
 
     logger->flush();
-    auto filename = basename + ".txt";
+    auto filename = basename;
     REQUIRE(count_lines(filename) == 10);
     for (int i = 0; i < 1000; i++)
         logger->info("Test message {}", i);
 
     logger->flush();
     REQUIRE(get_filesize(filename) <= 1024);
-    auto filename1 = basename + ".1.txt";
+    auto filename1 = basename + ".1";
     REQUIRE(get_filesize(filename1) <= 1024);
 }
 
@@ -83,7 +83,7 @@ TEST_CASE("daily_logger", "[daily_logger]]")
     std::string basename = "logs/daily_log";
     std::tm tm = spdlog::details::os::localtime();
     fmt::MemoryWriter w;
-    w.write("{}_{:04d}-{:02d}-{:02d}_{:02d}-{:02d}.txt", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min);
+    w.write("{}_{:04d}-{:02d}-{:02d}_{:02d}-{:02d}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min);
 
     auto logger = spdlog::daily_logger_mt("logger", basename, 0, 0);
     logger->flush_on(spdlog::level::info);
@@ -106,9 +106,9 @@ TEST_CASE("daily_logger with dateonly calculator", "[daily_logger_dateonly]]")
     std::string basename = "logs/daily_dateonly";
     std::tm tm = spdlog::details::os::localtime();
     fmt::MemoryWriter w;
-    w.write("{}_{:04d}-{:02d}-{:02d}.txt", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
+    w.write("{}_{:04d}-{:02d}-{:02d}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
 
-    auto logger = spdlog::create<sink_type>("logger", basename, "txt", 0, 0);
+    auto logger = spdlog::create<sink_type>("logger", basename, 0, 0);
     for (int i = 0; i < 10; ++i)
         logger->info("Test message {}", i);
     logger->flush();
@@ -118,11 +118,11 @@ TEST_CASE("daily_logger with dateonly calculator", "[daily_logger_dateonly]]")
 
 struct custom_daily_file_name_calculator
 {
-    static spdlog::filename_t calc_filename(const spdlog::filename_t& basename, const spdlog::filename_t& extension)
+    static spdlog::filename_t calc_filename(const spdlog::filename_t& basename)
     {
         std::tm tm = spdlog::details::os::localtime();
         fmt::MemoryWriter w;
-        w.write("{}{:04d}{:02d}{:02d}.{}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, extension);
+        w.write("{}{:04d}{:02d}{:02d}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
         return w.str();
     }
 };
@@ -138,9 +138,9 @@ TEST_CASE("daily_logger with custom calculator", "[daily_logger_custom]]")
     std::string basename = "logs/daily_dateonly";
     std::tm tm = spdlog::details::os::localtime();
     fmt::MemoryWriter w;
-    w.write("{}{:04d}{:02d}{:02d}.txt", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
+    w.write("{}{:04d}{:02d}{:02d}", basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
 
-    auto logger = spdlog::create<sink_type>("logger", basename, "txt", 0, 0);
+    auto logger = spdlog::create<sink_type>("logger", basename, 0, 0);
     for (int i = 0; i < 10; ++i)
         logger->info("Test message {}", i);
 

tests/tests.vcxproj

@@ -125,6 +125,7 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="cond_logging.cpp" />
     <ClCompile Include="errors.cpp" />
     <ClCompile Include="file_helper.cpp" />
     <ClCompile Include="file_log.cpp" />

tests/tests.vcxproj.filters

@@ -36,6 +36,9 @@
     <ClCompile Include="errors.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="cond_logging.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="includes.h">

tests/utils.cpp

@@ -1,14 +1,17 @@
 #include "includes.h"
 
+
 void prepare_logdir()
 {
     spdlog::drop_all();
 #ifdef _WIN32
-    auto rv = system("del /F /Q logs\\*");
+    system("if not exist logs mkdir logs");
+    system("del /F /Q logs\\*");
 #else
-    auto rv = system("rm -f logs/*");
-#endif
+    auto rv = system("mkdir -p logs");
+    rv = system("rm -f logs/*");
     (void)rv;
+#endif
 }