version 0.16.2

fix split_by_extenstion parse error extenstion

.gitignore

@@ -61,4 +61,7 @@ install_manifest.txt
 /tests/tests.VC.VC.opendb
 /tests/tests.VC.db
 /tests/tests
-/tests/logs/file_helper_test.txt
+/tests/logs/*
+
+# idea
+.idea/

.travis.yml

@@ -85,6 +85,7 @@ script:
   - ./"${BIN}"
   - valgrind --trace-children=yes --leak-check=full ./"${BIN}"
   - cd $CHECKOUT_PATH/tests; make rebuild; ./tests
+  - cd $CHECKOUT_PATH/tests; STYLE=printf make rebuild; ./tests
 
 notifications:
   email: false

CMakeLists.txt

@@ -1,87 +1,116 @@
-#
-# Copyright(c) 2015 Ruslan Baratov.
-# Distributed under the MIT License (http://opensource.org/licenses/MIT)
-#
-
-cmake_minimum_required(VERSION 3.1)
-project(spdlog VERSION 1.0.0)
-include(CTest)
-
-set(CMAKE_CXX_STANDARD 11)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
-if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-    set(CMAKE_CXX_FLAGS "-Wall ${CMAKE_CXX_FLAGS}")
-endif()
-
-add_library(spdlog INTERFACE)
-
-option(SPDLOG_BUILD_EXAMPLES "Build examples" OFF)
-option(SPDLOG_BUILD_TESTING "Build spdlog tests" ON)
-
-target_include_directories(
-    spdlog
-    INTERFACE
-    "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
-    "$<INSTALL_INTERFACE:include>"
-)
-
-set(HEADER_BASE "${CMAKE_CURRENT_SOURCE_DIR}/include")
-
-if(SPDLOG_BUILD_EXAMPLES)
-    add_subdirectory(example)
-endif()
-
-if(SPDLOG_BUILD_TESTING)
-    add_subdirectory(tests)
-endif()
-
-### Install ###
-# * https://github.com/forexample/package-example
-set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
-
-set(config_install_dir "lib/cmake/${PROJECT_NAME}")
-set(include_install_dir "include")
-set(pkgconfig_install_dir "lib/pkgconfig")
-
-set(version_config "${generated_dir}/${PROJECT_NAME}ConfigVersion.cmake")
-set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
-set(pkg_config "${generated_dir}/${PROJECT_NAME}.pc")
-set(targets_export_name "${PROJECT_NAME}Targets")
-set(namespace "${PROJECT_NAME}::")
-
-include(CMakePackageConfigHelpers)
-write_basic_package_version_file(
-    "${version_config}" COMPATIBILITY SameMajorVersion
-)
-
-# Note: use 'targets_export_name'
-configure_file("cmake/Config.cmake.in" "${project_config}" @ONLY)
-configure_file("cmake/spdlog.pc.in" "${pkg_config}" @ONLY)
-
-install(
-    TARGETS spdlog
-    EXPORT "${targets_export_name}"
-    INCLUDES DESTINATION "${include_install_dir}"
-)
-
-install(DIRECTORY "include/spdlog" DESTINATION "${include_install_dir}")
-
-install(
-    FILES "${project_config}" "${version_config}"
-    DESTINATION "${config_install_dir}"
-)
-
-install(
-    FILES "${pkg_config}"
-    DESTINATION "${pkgconfig_install_dir}"
-)
-
-install(
-    EXPORT "${targets_export_name}"
-    NAMESPACE "${namespace}"
-    DESTINATION "${config_install_dir}"
-)
-
-file(GLOB_RECURSE spdlog_include_SRCS "${HEADER_BASE}/*.h")
-add_custom_target(spdlog_headers_for_ide SOURCES ${spdlog_include_SRCS})
+#
+# Copyright(c) 2015 Ruslan Baratov.
+# Distributed under the MIT License (http://opensource.org/licenses/MIT)
+#
+
+cmake_minimum_required(VERSION 3.1)
+project(spdlog VERSION 0.16.2)
+include(CTest)
+include(CMakeDependentOption)
+include(GNUInstallDirs)
+
+#---------------------------------------------------------------------------------------
+# compiler config
+#---------------------------------------------------------------------------------------
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+    set(CMAKE_CXX_FLAGS "-Wall ${CMAKE_CXX_FLAGS}")
+endif()
+
+#---------------------------------------------------------------------------------------
+# spdlog target
+#---------------------------------------------------------------------------------------
+add_library(spdlog INTERFACE)
+
+option(SPDLOG_BUILD_EXAMPLES "Build examples" OFF)
+cmake_dependent_option(SPDLOG_BUILD_TESTING
+    "Build spdlog tests" ON
+    "BUILD_TESTING" OFF
+)
+
+target_include_directories(
+    spdlog
+    INTERFACE
+    "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
+    "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
+)
+
+set(HEADER_BASE "${CMAKE_CURRENT_SOURCE_DIR}/include")
+
+if(SPDLOG_BUILD_EXAMPLES)
+    add_subdirectory(example)
+endif()
+
+if(SPDLOG_BUILD_TESTING)
+    add_subdirectory(tests)
+endif()
+
+#---------------------------------------------------------------------------------------
+# Install/export targets and files
+#---------------------------------------------------------------------------------------
+# set files and directories
+set(config_install_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
+set(include_install_dir "${CMAKE_INSTALL_INCLUDEDIR}")
+set(pkgconfig_install_dir "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+set(version_config "${CMAKE_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
+set(project_config "${PROJECT_NAME}Config.cmake")
+set(pkg_config "${CMAKE_BINARY_DIR}/${PROJECT_NAME}.pc")
+set(targets_export_name "${PROJECT_NAME}Targets")
+set(namespace "${PROJECT_NAME}::")
+
+# generate package version file
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+    "${version_config}" COMPATIBILITY SameMajorVersion
+)
+
+# configure pkg config file
+configure_file("cmake/spdlog.pc.in" "${pkg_config}" @ONLY)
+
+# install targets
+install(
+    TARGETS spdlog
+    EXPORT "${targets_export_name}"
+    INCLUDES DESTINATION "${include_install_dir}"
+)
+
+# install headers
+install(
+    DIRECTORY "${HEADER_BASE}/${PROJECT_NAME}"
+    DESTINATION "${include_install_dir}"
+)
+
+# install project version file
+install(
+    FILES "${version_config}"
+    DESTINATION "${config_install_dir}"
+)
+
+# install pkg config file
+install(
+    FILES "${pkg_config}"
+    DESTINATION "${pkgconfig_install_dir}"
+)
+
+# install project config file
+install(
+    EXPORT "${targets_export_name}"
+    NAMESPACE "${namespace}"
+    DESTINATION "${config_install_dir}"
+    FILE ${project_config}
+)
+
+# export build directory config file
+export(
+    EXPORT ${targets_export_name}
+    NAMESPACE "${namespace}"
+    FILE ${project_config}
+)
+
+# register project in CMake user registry
+export(PACKAGE ${PROJECT_NAME})
+
+file(GLOB_RECURSE spdlog_include_SRCS "${HEADER_BASE}/*.h")
+add_custom_target(spdlog_headers_for_ide SOURCES ${spdlog_include_SRCS})

README.md

@@ -4,17 +4,18 @@ 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.
 
-#### Or use your favourite package manager:
+#### Or use your favorite package manager:
 
 * Ubuntu: `apt-get install libspdlog-dev`
 * Homebrew: `brew install spdlog`
 * FreeBSD:  `cd /usr/ports/devel/spdlog/ && make install clean`
 * Fedora: `yum install spdlog`
-* Arch Linux: `pacman -S spdlog-git`
+* Gentoo: `emerge dev-libs/spdlog`
+* Arch Linux: `yaourt -S spdlog-git`
 * vcpkg: `vcpkg install spdlog`
  
 
@@ -24,12 +25,14 @@ 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.
+* Optional printf syntax support.
 * 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.
@@ -90,15 +93,15 @@ int main(int, char*[])
         auto console = spd::stdout_color_mt("console");
         console->info("Welcome to spdlog!");
         console->error("Some error message with arg{}..", 1);
-
+	
         // 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);
         console->info("Support for floats {:03.2f}", 1.23456);
         console->info("Positional args are {1} {0}..", "too", "supported");
         console->info("{:<30}", "left aligned");
-        
-
+	
+	// Use global registry to retrieve loggers
         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)
@@ -106,12 +109,12 @@ int main(int, char*[])
         my_logger->info("Some log message");
 
         // Create a file rotating logger with 5mb size max and 3 rotated files
-        auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/mylogfile", 1048576 * 5, 3);
+        auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/mylogfile.txt", 1048576 * 5, 3);
         for (int i = 0; i < 10; ++i)
             rotating_logger->info("{} * {} equals {:>10}", i, i, i*i);
 
         // Create a daily logger - a new file is created every day on 2:30am
-        auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily", 2, 30);
+        auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
         // trigger flush if the log severity is error or higher
         daily_logger->flush_on(spd::level::err);
         daily_logger->info(123.44);
@@ -121,11 +124,11 @@ 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 should not be displayed!");
+	console->set_level(spd::level::debug); // Set specific logger's log level
+	console->debug("This message should be displayed..");
 
         // Compile time log levels
         // define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
@@ -149,13 +152,13 @@ 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 +171,7 @@ 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 +209,7 @@ 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)

appveyor.yml

@@ -0,0 +1,32 @@
+version: 1.0.{build}
+image: Visual Studio 2015
+environment:
+  matrix:
+  - GENERATOR: '"MinGW Makefiles"'
+    BUILD_TYPE: Debug
+  - GENERATOR: '"MinGW Makefiles"'
+    BUILD_TYPE: Release
+  - GENERATOR: '"Visual Studio 14 2015"'
+    BUILD_TYPE: Debug
+  - GENERATOR: '"Visual Studio 14 2015"'
+    BUILD_TYPE: Release
+  - GENERATOR: '"Visual Studio 14 2015 Win64"'
+    BUILD_TYPE: Debug
+  - GENERATOR: '"Visual Studio 14 2015 Win64"'
+    BUILD_TYPE: Release
+build_script:
+- cmd: >-
+    set
+
+    mkdir build
+
+    cd build
+
+    set PATH=%PATH:C:\Program Files\Git\usr\bin;=%
+
+    set PATH=C:\mingw-w64\i686-5.3.0-posix-dwarf-rt_v4-rev0\mingw32\bin;%PATH%
+
+    cmake .. -G %GENERATOR% -DCMAKE_BUILD_TYPE=%BUILD_TYPE%
+
+    cmake --build . --config %BUILD_TYPE%
+test: off

example/Makefile.mingw

@@ -1,5 +1,5 @@
 CXX	?= g++
-CXXFLAGS	=  -D_WIN32_WINNT=0x600 -march=native -Wall -Wextra -Wshadow -pedantic -std=c++11 -pthread -Wl,--no-as-needed  -I../include 
+CXXFLAGS	=  -D_WIN32_WINNT=0x600 -march=native -Wall -Wextra -Wshadow -pedantic -std=gnu++0x -pthread -Wl,--no-as-needed  -I../include 
 CXX_RELEASE_FLAGS = -O3 
 CXX_DEBUG_FLAGS= -g 
 

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 +31,7 @@ int main(int, char*[])
         console->info("Welcome to spdlog!");
         console->error("Some error message with arg{}..", 1);
 
+
         // 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);
@@ -34,21 +39,20 @@ int main(int, char*[])
         console->info("Positional args are {1} {0}..", "too", "supported");
         console->info("{:<30}", "left aligned");
 
-
         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-log.txt");
         my_logger->info("Some log message");
 
         // Create a file rotating logger with 5mb size max and 3 rotated files
-        auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/mylogfile", 1048576 * 5, 3);
+        auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
         for (int i = 0; i < 10; ++i)
             rotating_logger->info("{} * {} equals {:>10}", i, i, i*i);
 
         // Create a daily logger - a new file is created every day on 2:30am
-        auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily", 2, 30);
+        auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
         // trigger flush if the log severity is error or higher
         daily_logger->flush_on(spd::level::err);
         daily_logger->info(123.44);
@@ -69,6 +73,7 @@ int main(int, char*[])
         SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
         SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
 
+
         // Asynchronous logging is very fast..
         // Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous..
         async_example();
@@ -107,7 +112,6 @@ 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");
-
     for (int i = 0; i < 100; ++i)
         async_file->info("Async message #{}", i);
 }
@@ -143,7 +147,7 @@ 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 "common.h"
+#include "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 "details/async_logger_impl.h"

include/spdlog/common.h

@@ -18,7 +18,7 @@
 #include <locale>
 #endif
 
-#include <spdlog/details/null_mutex.h>
+#include "details/null_mutex.h"
 
 //visual studio upto 2013 does not support noexcept nor constexpr
 #if defined(_MSC_VER) && (_MSC_VER < 1900)
@@ -29,6 +29,13 @@
 #define SPDLOG_CONSTEXPR constexpr
 #endif
 
+// final keyword support. On by default. See tweakme.h
+#if defined(SPDLOG_NO_FINAL)
+#define SPDLOG_FINAL
+#else
+#define SPDLOG_FINAL final
+#endif
+
 #if defined(__GNUC__)  || defined(__clang__)
 #define SPDLOG_DEPRECATED __attribute__((deprecated))
 #elif defined(_MSC_VER)
@@ -37,8 +44,7 @@
 #define SPDLOG_DEPRECATED
 #endif
 
-
-#include <spdlog/fmt/fmt.h>
+#include "fmt/fmt.h"
 
 namespace spdlog
 {
@@ -76,7 +82,10 @@ 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 +110,15 @@ 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 "../common.h"
+#include "../sinks/sink.h"
+#include "../details/mpmc_bounded_q.h"
+#include "../details/log_msg.h"
+#include "../details/os.h"
+#include "../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)
-        wait_empty_q(); //return only make after the above flush message was processed
+    if (wait_for_q)
+        wait_empty_q(); //return when queue is empty
 }
 
 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 exeption in async logger worker loop.");            
+        }
     }
+    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);
                 }
@@ -360,19 +376,24 @@ inline void spdlog::details::async_log_helper::sleep_or_yield(const spdlog::log_
     if (time_since_op <= milliseconds(200))
         return sleep_for(milliseconds(20));
 
-    // sleep for 200 ms
-    return sleep_for(milliseconds(200));
+    // sleep for 500 ms
+    return sleep_for(milliseconds(500));
 }
 
 // wait for the queue to be empty
 inline void spdlog::details::async_log_helper::wait_empty_q()
 {
     auto last_op = details::os::now();
-    while (_q.approx_size() > 0)
+    while (!_q.is_empty())
     {
         sleep_or_yield(details::os::now(), last_op);
     }
 }
 
+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 "../details/async_log_helper.h"
+#include "../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)
+        _incr_msg_counter(msg);
+#endif
         _async_log_helper->log(msg);
         if (_should_flush_on(msg))
             _async_log_helper->flush(false); // do async flush
@@ -82,8 +98,10 @@ inline void spdlog::async_logger::_sink_it(details::log_msg& msg)
     {
         _err_handler(ex.what());
     }
-    catch (...)
+    catch(...)
     {
-        _err_handler("Unknown exception");
+        _err_handler("Unknown exception in logger " + _name);
+        throw;
     }
+
 }

include/spdlog/details/file_helper.h

@@ -7,16 +7,16 @@
 
 // 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 "../details/os.h"
+#include "../details/log_msg.h"
 
 #include <chrono>
 #include <cstdio>
 #include <string>
 #include <thread>
+#include <tuple>
 #include <cerrno>
 
 namespace spdlog
@@ -85,14 +85,13 @@ public:
 
     void write(const log_msg& msg)
     {
-
         size_t msg_size = msg.formatted.size();
         auto data = msg.formatted.data();
         if (std::fwrite(data, 1, msg_size, _fd) != msg_size)
             throw spdlog_ex("Failed writing to file " + os::filename_to_str(_filename), errno);
     }
 
-    size_t size()
+    size_t size() const
     {
         if (!_fd)
             throw spdlog_ex("Cannot use size() on closed file " + os::filename_to_str(_filename));
@@ -104,12 +103,41 @@ public:
         return _filename;
     }
 
-    static bool file_exists(const filename_t& name)
+    static bool file_exists(const filename_t& fname)
     {
-
-        return os::file_exists(name);
+        return os::file_exists(fname);
     }
 
+    //
+    // return file path and its extension:
+    //
+    // "mylog.txt" => ("mylog", ".txt")
+    // "mylog" => ("mylog", "")
+	// "mylog." => ("mylog.", "")
+	// "/dir1/dir2/mylog.txt" => ("/dir1/dir2/mylog", ".txt")
+    //
+    // the starting dot in filenames is ignored (hidden files):
+    //
+	// ".mylog" => (".mylog". "")
+    // "my_folder/.mylog" => ("my_folder/.mylog", "")
+    // "my_folder/.mylog.txt" => ("my_folder/.mylog", ".txt")
+	static std::tuple<filename_t, filename_t> split_by_extenstion(const spdlog::filename_t& fname)
+	{
+		auto ext_index = fname.rfind('.');
+
+		// no valid extension found - return whole path and empty string as extension
+		if (ext_index == filename_t::npos || ext_index == 0 || ext_index == fname.size() - 1)
+			return std::make_tuple(fname, spdlog::filename_t());
+
+		// treat casese like "/etc/rc.d/somelogfile or "/abc/.hiddenfile"
+		//auto folder_index = fname.find('\\', ext_index);
+		auto folder_index = fname.rfind(details::os::folder_sep);
+		if (folder_index != fname.npos && folder_index >= ext_index - 1)
+			return std::make_tuple(fname, spdlog::filename_t());
+
+		// finally - return a valid base and extnetion tuple
+		return std::make_tuple(fname.substr(0, ext_index), fname.substr(ext_index));
+	}
 private:
     FILE* _fd;
     filename_t _filename;

include/spdlog/details/log_msg.h

@@ -5,8 +5,8 @@
 
 #pragma once
 
-#include <spdlog/common.h>
-#include <spdlog/details/os.h>
+#include "../common.h"
+#include "../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

@@ -5,24 +5,24 @@
 
 #pragma once
 
-#include <spdlog/logger.h>
-#include <spdlog/sinks/stdout_sinks.h>
+#include "../logger.h"
+#include "../sinks/stdout_sinks.h"
 
 #include <memory>
 #include <string>
 
-
 // create logger with given name, sinks and the default pattern formatter
 // all other ctors will call this one
 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);
@@ -52,12 +52,11 @@ 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);
 }
 
-
 template <typename... Args>
 inline void spdlog::logger::log(level::level_enum lvl, const char* fmt, const Args&... args)
 {
@@ -66,16 +65,22 @@ inline void spdlog::logger::log(level::level_enum lvl, const char* fmt, const Ar
     try
     {
         details::log_msg log_msg(&_name, lvl);
+
+#if defined(SPDLOG_FMT_PRINTF)
+        fmt::printf(log_msg.raw, fmt, args...);
+#else
         log_msg.raw.write(fmt, args...);
+#endif
         _sink_it(log_msg);
     }
     catch (const std::exception &ex)
     {
         _err_handler(ex.what());
     }
-    catch (...)
+    catch(...)
     {
-        _err_handler("Unknown exception");
+        _err_handler("Unknown exception in logger " + _name);
+        throw;
     }
 }
 
@@ -93,11 +98,11 @@ inline void spdlog::logger::log(level::level_enum lvl, const char* msg)
     {
         _err_handler(ex.what());
     }
-    catch (...)
-    {
-        _err_handler("Unknown exception");
-    }
-
+	catch (...)
+	{
+		_err_handler("Unknown exception in logger " + _name);
+		throw;
+	}
 }
 
 template<typename T>
@@ -114,48 +119,48 @@ inline void spdlog::logger::log(level::level_enum lvl, const T& msg)
     {
         _err_handler(ex.what());
     }
-    catch (...)
-    {
-        _err_handler("Unknown exception");
-    }
+	catch (...)
+	{
+		_err_handler("Unknown exception in logger " + _name);
+		throw;
+	}
 }
 
 
-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... Args>
-inline void spdlog::logger::debug(const char* fmt, const Args&... args)
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::debug(const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::debug, fmt, args...);
+    log(level::debug, fmt, arg1, args...);
 }
 
-template <typename... Args>
-inline void spdlog::logger::info(const char* fmt, const Args&... args)
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::info(const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::info, fmt, args...);
+    log(level::info, fmt, arg1, args...);
 }
 
-
-template <typename... Args>
-inline void spdlog::logger::warn(const char* fmt, const Args&... args)
+template <typename Arg1, typename... Args>
+inline void spdlog::logger::warn(const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::warn, fmt, args...);
+    log(level::warn, 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::error(const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::err, fmt, args...);
+    log(level::err, 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::critical(const char* fmt, const Arg1 &arg1, const Args&... args)
 {
-    log(level::critical, fmt, args...);
+    log(level::critical, fmt, arg1, args...);
 }
 
 
@@ -199,6 +204,67 @@ inline void spdlog::logger::critical(const T& msg)
 
 
 
+#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
+#include <codecvt>
+#include <locale>
+
+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...);
+}
+
+#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
+
+
 
 //
 // name and level
@@ -244,6 +310,9 @@ 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)
+    _incr_msg_counter(msg);
+#endif
     _formatter->format(msg);
     for (auto &sink : _sinks)
     {
@@ -257,9 +326,9 @@ 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)
 {
@@ -292,7 +361,13 @@ inline bool spdlog::logger::_should_flush_on(const details::log_msg &msg)
     return (msg.level >= flush_level) && (msg.level != level::off);
 }
 
+inline void spdlog::logger::_incr_msg_counter(details::log_msg &msg)
+{
+    msg.msg_id = _msg_counter.fetch_add(1, std::memory_order_relaxed);
+}
+
 inline const std::vector<spdlog::sink_ptr>& spdlog::logger::sinks() const
 {
     return _sinks;
 }
+

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 "../common.h"
 
 #include <atomic>
 #include <utility>
@@ -61,11 +61,11 @@ public:
     using item_type = T;
     mpmc_bounded_queue(size_t buffer_size)
         :max_size_(buffer_size),
-         buffer_(new cell_t [buffer_size]),
+         buffer_(new cell_t[buffer_size]),
          buffer_mask_(buffer_size - 1)
     {
         //queue size must be power of two
-        if(!((buffer_size >= 2) && ((buffer_size & (buffer_size - 1)) == 0)))
+        if (!((buffer_size >= 2) && ((buffer_size & (buffer_size - 1)) == 0)))
             throw spdlog_ex("async logger queue size must be power of two");
 
         for (size_t i = 0; i != buffer_size; i += 1)
@@ -76,7 +76,7 @@ public:
 
     ~mpmc_bounded_queue()
     {
-        delete [] buffer_;
+        delete[] buffer_;
     }
 
 
@@ -88,7 +88,7 @@ public:
         {
             cell = &buffer_[pos & buffer_mask_];
             size_t seq = cell->sequence_.load(std::memory_order_acquire);
-            intptr_t dif = (intptr_t)seq - (intptr_t)pos;
+            intptr_t dif = static_cast<intptr_t>(seq) - static_cast<intptr_t>(pos);
             if (dif == 0)
             {
                 if (enqueue_pos_.compare_exchange_weak(pos, pos + 1, std::memory_order_relaxed))
@@ -117,7 +117,7 @@ public:
             cell = &buffer_[pos & buffer_mask_];
             size_t seq =
                 cell->sequence_.load(std::memory_order_acquire);
-            intptr_t dif = (intptr_t)seq - (intptr_t)(pos + 1);
+            intptr_t dif = static_cast<intptr_t>(seq) - static_cast<intptr_t>(pos + 1);
             if (dif == 0)
             {
                 if (dequeue_pos_.compare_exchange_weak(pos, pos + 1, std::memory_order_relaxed))
@@ -133,14 +133,18 @@ public:
         return true;
     }
 
-    size_t approx_size()
+    bool is_empty()
     {
-        size_t first_pos = dequeue_pos_.load(std::memory_order_relaxed);
-        size_t last_pos = enqueue_pos_.load(std::memory_order_relaxed);
-        if (last_pos <= first_pos)
-            return 0;
-        auto size = last_pos - first_pos;
-        return size < max_size_ ? size : max_size_;
+        size_t front, front1, back;
+        // try to take a consistent snapshot of front/tail.
+        do
+        {
+            front = enqueue_pos_.load(std::memory_order_acquire);
+            back = dequeue_pos_.load(std::memory_order_acquire);
+            front1 = enqueue_pos_.load(std::memory_order_relaxed);
+        }
+        while (front != front1);
+        return back == front;
     }
 
 private:
@@ -153,7 +157,7 @@ private:
     size_t const max_size_;
 
     static size_t const     cacheline_size = 64;
-    typedef char            cacheline_pad_t [cacheline_size];
+    typedef char            cacheline_pad_t[cacheline_size];
 
     cacheline_pad_t         pad0_;
     cell_t* const           buffer_;

include/spdlog/details/os.h

@@ -4,7 +4,7 @@
 //
 #pragma once
 
-#include <spdlog/common.h>
+#include "../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>
@@ -142,6 +143,16 @@ inline bool operator!=(const std::tm& tm1, const std::tm& tm2)
 SPDLOG_CONSTEXPR static const char* eol = SPDLOG_EOL;
 SPDLOG_CONSTEXPR static int eol_size = sizeof(SPDLOG_EOL) - 1;
 
+
+
+// folder separator
+#ifdef _WIN32
+SPDLOG_CONSTEXPR static const char folder_sep = '\\';
+#else
+SPDLOG_CONSTEXPR static const char folder_sep = '/';
+#endif
+
+
 inline void prevent_child_fd(FILE *f)
 {
 #ifdef _WIN32
@@ -150,7 +161,7 @@ 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 +181,7 @@ 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 +219,7 @@ 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
 }
 
@@ -220,7 +231,7 @@ inline size_t filesize(FILE *f)
 {
     if (f == nullptr)
         throw spdlog_ex("Failed getting file size. fd is null");
-#ifdef _WIN32
+#if defined ( _WIN32) && !defined(__CYGWIN__)
     int fd = _fileno(f);
 #if _WIN64 //64 bits
     struct _stat64 st;
@@ -235,12 +246,12 @@ inline size_t filesize(FILE *f)
 
 #else // unix
     int fd = fileno(f);
-    //64 bits(but not in osx, where fstat64 is deprecated)
-#if !defined(__FreeBSD__) && !defined(__APPLE__) && (defined(__x86_64__) || defined(__ppc64__))
+    //64 bits(but not in osx or cygwin, where fstat64 is deprecated)
+#if !defined(__FreeBSD__) && !defined(__APPLE__) && (defined(__x86_64__) || defined(__ppc64__)) && !defined(__CYGWIN__)
     struct stat64 st;
     if (fstat64(fd, &st) == 0)
         return static_cast<size_t>(st.st_size);
-#else // unix 32 bits or osx
+#else // unix 32 bits or cygwin
     struct stat st;
     if (fstat(fd, &st) == 0)
         return static_cast<size_t>(st.st_size);
@@ -315,7 +326,7 @@ inline int utc_minutes_offset(const std::tm& tm = details::os::localtime())
 }
 
 //Return current thread id as size_t
-//It exists because the std::this_thread::get_id() is much slower(espcially under VS 2013)
+//It exists because the std::this_thread::get_id() is much slower(especially under VS 2013)
 inline size_t _thread_id()
 {
 #ifdef _WIN32
@@ -329,7 +340,11 @@ 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
 }
@@ -337,17 +352,17 @@ inline size_t _thread_id()
 //Return current thread id as size_t (from thread local storage)
 inline size_t thread_id()
 {
-#if defined(_MSC_VER) && (_MSC_VER < 1900) || defined(__clang__) && !__has_feature(cxx_thread_local)
+#if defined(SPDLOG_DISABLE_TID_CACHING) || (defined(_MSC_VER) && (_MSC_VER < 1900)) || (defined(__clang__) && !__has_feature(cxx_thread_local))
     return _thread_id();
-#else
+#else // cache thread id in tls
     static thread_local const size_t tid = _thread_id();
     return tid;
 #endif
+
+
 }
 
 
-
-
 // wchar support for windows file names (SPDLOG_WCHAR_FILENAMES must be defined)
 #if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
 #define SPDLOG_FILENAME_T(s) L ## s
@@ -364,6 +379,22 @@ 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 +403,10 @@ 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 +414,11 @@ 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 +433,47 @@ inline int pid()
 
 }
 
+
+// Determine 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 "../formatter.h"
+#include "../details/log_msg.h"
+#include "../details/os.h"
+#include "../fmt/fmt.h"
 
 #include <chrono>
 #include <ctime>
@@ -79,72 +79,54 @@ 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", "Jun", "Jul", "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];
     }
 };
 
 
-//write 2 ints seperated by sep with padding of 2
+//write 2 ints separated by sep with padding of 2
 static fmt::MemoryWriter& pad_n_join(fmt::MemoryWriter& w, int v1, int v2, char sep)
 {
     w << fmt::pad(v1, 2, '0') << sep << fmt::pad(v2, 2, '0');
     return w;
 }
 
-//write 3 ints seperated by sep with padding of 2
+//write 3 ints separated by sep with padding of 2
 static fmt::MemoryWriter& pad_n_join(fmt::MemoryWriter& w, int v1, int v2, int v3, char sep)
 {
     w << fmt::pad(v1, 2, '0') << sep << fmt::pad(v2, 2, '0') << sep << fmt::pad(v3, 2, '0');
@@ -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
     {
@@ -280,8 +262,18 @@ class F_formatter:public flag_formatter
     }
 };
 
+class E_formatter SPDLOG_FINAL:public flag_formatter
+{
+    void format(details::log_msg& msg, const std::tm&) override
+    {
+        auto duration = msg.time.time_since_epoch();
+        auto seconds = std::chrono::duration_cast<std::chrono::seconds>(duration).count();
+        msg.formatted << seconds;
+    }
+};
+
 // 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 +283,7 @@ 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 +292,7 @@ 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 +301,7 @@ 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 +309,13 @@ 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 +367,7 @@ 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 +376,7 @@ 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
     {
@@ -393,8 +384,16 @@ class pid_formatter:public flag_formatter
     }
 };
 
+// message counter formatter
+class i_formatter SPDLOG_FINAL :public flag_formatter
+{
+    void format(details::log_msg& msg, const std::tm&) override
+    {
+        msg.formatted << fmt::pad(msg.msg_id, 6, '0');
+    }
+};
 
-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 +401,7 @@ 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 +416,7 @@ 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 +435,7 @@ 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 +487,8 @@ 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);
 }
@@ -616,6 +616,10 @@ inline void spdlog::pattern_formatter::handle_flag(char flag)
         _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::F_formatter()));
         break;
 
+    case('E'):
+        _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::E_formatter()));
+        break;
+
     case('p'):
         _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::p_formatter()));
         break;
@@ -645,19 +649,31 @@ 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
+
+    case ('i'):
+        _formatters.push_back(std::unique_ptr<details::flag_formatter>(new details::i_formatter()));
+        break;
+
+    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 "../details/null_mutex.h"
+#include "../logger.h"
+#include "../async_logger.h"
+#include "../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.h"
+#include "../details/registry.h"
+#include "../sinks/file_sinks.h"
+#include "../sinks/stdout_sinks.h"
 #ifdef SPDLOG_ENABLE_SYSLOG
-#include <spdlog/sinks/syslog_sink.h>
+#include "../sinks/syslog_sink.h"
 #endif
 
 #ifdef _WIN32
-#include <spdlog/sinks/wincolor_sink.h>
+#include "../sinks/wincolor_sink.h"
 #else
-#include <spdlog/sinks/ansicolor_sink.h>
+#include "../sinks/ansicolor_sink.h"
 #endif
 
 
 #ifdef __ANDROID__
-#include <spdlog/sinks/android_sink.h>
+#include "../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);
 }
 
 
@@ -137,34 +137,34 @@ 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
 
 #ifdef SPDLOG_ENABLE_SYSLOG
 // Create syslog logger
-inline std::shared_ptr<spdlog::logger> spdlog::syslog_logger(const std::string& logger_name, const std::string& syslog_ident, int syslog_option)
+inline std::shared_ptr<spdlog::logger> spdlog::syslog_logger(const std::string& logger_name, const std::string& syslog_ident, int syslog_option, int syslog_facility)
 {
-    return create<spdlog::sinks::syslog_sink>(logger_name, syslog_ident, syslog_option);
+    return create<spdlog::sinks::syslog_sink>(logger_name, syslog_ident, syslog_option, syslog_facility);
 }
 #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/LICENSE.rst

@@ -0,0 +1,23 @@
+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:
+
+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.

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

@@ -1,17 +1,16 @@
 /*
-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
@@ -21,45 +20,42 @@ namespace internal
 {
 
 template <class Char>
-class FormatBuf: public std::basic_streambuf<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;
 
     Buffer<Char> &buffer_;
-    Char *start_;
 
 public:
-    FormatBuf(Buffer<Char> &buffer): buffer_(buffer), start_(&buffer[0])
-    {
-        this->setp(start_, start_ + buffer_.capacity());
-    }
+    FormatBuf(Buffer<Char> &buffer) : buffer_(buffer) {}
 
-    int_type overflow(int_type ch = traits_type::eof())
+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.
+
+    int_type overflow(int_type ch = traits_type::eof()) FMT_OVERRIDE
     {
         if (!traits_type::eq_int_type(ch, traits_type::eof()))
-        {
-            size_t buf_size = size();
-            buffer_.resize(buf_size);
-            buffer_.reserve(buf_size * 2);
-
-            start_ = &buffer_[0];
-            start_[buf_size] = traits_type::to_char_type(ch);
-            this->setp(start_ + buf_size + 1, start_ + buf_size * 2);
-        }
+            buffer_.push_back(static_cast<Char>(ch));
         return ch;
     }
 
-    size_t size() const
+    std::streamsize xsputn(const Char *s, std::streamsize count) FMT_OVERRIDE
     {
-        return to_unsigned(this->pptr() - start_);
+        buffer_.append(s, s + count);
+        return count;
     }
 };
 
 Yes &convert(std::ostream &);
 
-struct DummyStream: std::ostream
+struct DummyStream : std::ostream
 {
     DummyStream();  // Suppress a bogus warning in MSVC.
     // Hide all operator<< overloads from std::ostream.
@@ -79,12 +75,12 @@ struct ConvertToIntImpl<T, true>
 };
 
 // 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,
+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;
@@ -93,20 +89,20 @@ void format_arg(BasicFormatter<Char, ArgFormatter> &f,
     std::basic_ostream<Char> output(&format_buf);
     output << value;
 
-    BasicStringRef<Char> str(&buffer[0], format_buf.size());
+    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 +1,424 @@
+/*
+ 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.cc

@@ -0,0 +1,32 @@
+/*
+ Formatting library for C++
+
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
+
+ For the license information refer to format.h.
+ */
+
+#include "format.h"
+#include "printf.h"
+
+namespace fmt {
+
+template <typename Char>
+void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args);
+
+FMT_FUNC int fprintf(std::FILE *f, CStringRef format, ArgList args) {
+  MemoryWriter w;
+  printf(w, format, args);
+  std::size_t size = w.size();
+  return std::fwrite(w.data(), 1, size, f) < size ? -1 : static_cast<int>(size);
+}
+
+#ifndef FMT_HEADER_ONLY
+
+template void PrintfFormatter<char>::format(CStringRef format);
+template void PrintfFormatter<wchar_t>::format(WCStringRef format);
+
+#endif  // FMT_HEADER_ONLY
+
+}  // namespace fmt

include/spdlog/fmt/bundled/printf.h

@@ -1,11 +1,11 @@
 /*
-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.
 
-For the license information refer to format.h.
-*/
+ For the license information refer to format.h.
+ */
 
 #ifndef FMT_PRINTF_H_
 #define FMT_PRINTF_H_
@@ -52,7 +52,7 @@ struct IntChecker<true>
     }
 };
 
-class PrecisionHandler: public ArgVisitor<PrecisionHandler, int>
+class PrecisionHandler : public ArgVisitor<PrecisionHandler, int>
 {
 public:
     void report_unhandled_arg()
@@ -70,7 +70,7 @@ public:
 };
 
 // IsZeroInt::visit(arg) returns true iff arg is a zero integer.
-class IsZeroInt: public ArgVisitor<IsZeroInt, bool>
+class IsZeroInt : public ArgVisitor<IsZeroInt, bool>
 {
 public:
     template <typename T>
@@ -80,22 +80,53 @@ public:
     }
 };
 
+// returns the default type for format specific "%s"
+class DefaultType : public ArgVisitor<DefaultType, char>
+{
+public:
+    char visit_char(int)
+    {
+        return 'c';
+    }
+
+    char visit_bool(bool)
+    {
+        return 's';
+    }
+
+    char visit_pointer(const void *)
+    {
+        return 'p';
+    }
+
+    template <typename T>
+    char visit_any_int(T)
+    {
+        return 'd';
+    }
+
+    template <typename T>
+    char visit_any_double(T)
+    {
+        return 'g';
+    }
+
+    char visit_unhandled_arg()
+    {
+        return 's';
+    }
+};
+
 template <typename T, typename U>
 struct is_same
 {
-    enum
-    {
-        value = 0
-    };
+    enum { value = 0 };
 };
 
 template <typename T>
 struct is_same<T, T>
 {
-    enum
-    {
-        value = 1
-    };
+    enum { value = 1 };
 };
 
 // An argument visitor that converts an integer argument to T for printf,
@@ -103,7 +134,7 @@ struct is_same<T, T>
 // 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>
+class ArgConverter : public ArgVisitor<ArgConverter<T>, void>
 {
 private:
     internal::Arg &arg_;
@@ -113,8 +144,7 @@ private:
 
 public:
     ArgConverter(internal::Arg &arg, wchar_t type)
-        : arg_(arg), type_(type)
-    {}
+        : arg_(arg), type_(type) {}
 
     void visit_bool(bool value)
     {
@@ -122,10 +152,21 @@ public:
             visit_any_int(value);
     }
 
+    void visit_char(char value)
+    {
+        if (type_ != 's')
+            visit_any_int(value);
+    }
+
     template <typename U>
     void visit_any_int(U value)
     {
         bool is_signed = type_ == 'd' || type_ == 'i';
+        if (type_ == 's')
+        {
+            is_signed = std::numeric_limits<U>::is_signed;
+        }
+
         using internal::Arg;
         typedef typename internal::Conditional<
         is_same<T, void>::value, U, T>::type TargetType;
@@ -165,7 +206,7 @@ public:
 };
 
 // Converts an integer argument to char for printf.
-class CharConverter: public ArgVisitor<CharConverter, void>
+class CharConverter : public ArgVisitor<CharConverter, void>
 {
 private:
     internal::Arg &arg_;
@@ -173,8 +214,7 @@ private:
     FMT_DISALLOW_COPY_AND_ASSIGN(CharConverter);
 
 public:
-    explicit CharConverter(internal::Arg &arg): arg_(arg)
-    {}
+    explicit CharConverter(internal::Arg &arg) : arg_(arg) {}
 
     template <typename T>
     void visit_any_int(T value)
@@ -186,7 +226,7 @@ public:
 
 // Checks if an argument is a valid printf width specifier and sets
 // left alignment if it is negative.
-class WidthHandler: public ArgVisitor<WidthHandler, unsigned>
+class WidthHandler : public ArgVisitor<WidthHandler, unsigned>
 {
 private:
     FormatSpec &spec_;
@@ -194,8 +234,7 @@ private:
     FMT_DISALLOW_COPY_AND_ASSIGN(WidthHandler);
 
 public:
-    explicit WidthHandler(FormatSpec &spec): spec_(spec)
-    {}
+    explicit WidthHandler(FormatSpec &spec) : spec_(spec) {}
 
     void report_unhandled_arg()
     {
@@ -221,24 +260,25 @@ public:
 }  // namespace internal
 
 /**
-\rst
-A ``printf`` argument formatter based on the `curiously recurring template
-pattern <http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern>`_.
+  \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>
+  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, typename Spec>
+class BasicPrintfArgFormatter :
+    public internal::ArgFormatterBase<Impl, Char, Spec>
 {
 private:
     void write_null_pointer()
@@ -247,24 +287,23 @@ private:
         this->write("(nil)");
     }
 
-    typedef internal::ArgFormatterBase<Impl, Char> Base;
+    typedef internal::ArgFormatterBase<Impl, Char, Spec> 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)
-    {}
+      \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, Spec &s)
+        : internal::ArgFormatterBase<Impl, Char, Spec>(w, s) {}
 
     /** Formats an argument of type ``bool``. */
     void visit_bool(bool value)
     {
-        FormatSpec &fmt_spec = this->spec();
+        Spec &fmt_spec = this->spec();
         if (fmt_spec.type_ != 's')
             return this->visit_any_int(value);
         fmt_spec.type_ = 0;
@@ -274,7 +313,7 @@ public:
     /** Formats a character. */
     void visit_char(int value)
     {
-        const FormatSpec &fmt_spec = this->spec();
+        const Spec &fmt_spec = this->spec();
         BasicWriter<Char> &w = this->writer();
         if (fmt_spec.type_ && fmt_spec.type_ != 'c')
             w.write_int(value, fmt_spec);
@@ -325,7 +364,7 @@ public:
     void visit_custom(internal::Arg::CustomValue c)
     {
         BasicFormatter<Char> formatter(ArgList(), this->writer());
-        const Char format_str[] = { '}', 0 };
+        const Char format_str[] = {'}', 0};
         const Char *format = format_str;
         c.format(&formatter, c.value, &format);
     }
@@ -333,19 +372,18 @@ public:
 
 /** The default printf argument formatter. */
 template <typename Char>
-class PrintfArgFormatter
-    : public BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char>
+class PrintfArgFormatter :
+    public BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char, FormatSpec>
 {
 public:
     /** Constructs an argument formatter object. */
     PrintfArgFormatter(BasicWriter<Char> &w, FormatSpec &s)
-        : BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char>(w, s)
-    {}
+        : BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char, FormatSpec>(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
+class PrintfFormatter : private internal::FormatterBase
 {
 private:
     BasicWriter<Char> &writer_;
@@ -363,18 +401,17 @@ private:
 
 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
-    */
+     \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)
-    {}
+        : FormatterBase(al), writer_(w) {}
 
     /** Formats stored arguments and writes the output to the writer. */
-    FMT_API void format(BasicCStringRef<Char> format_str);
+    void format(BasicCStringRef<Char> format_str);
 };
 
 template <typename Char, typename AF>
@@ -498,6 +535,10 @@ void PrintfFormatter<Char, AF>::format(BasicCStringRef<Char> format_str)
                 ++s;
                 spec.precision_ = internal::PrecisionHandler().visit(get_arg(s));
             }
+            else
+            {
+                spec.precision_ = 0;
+            }
         }
 
         using internal::Arg;
@@ -550,6 +591,13 @@ void PrintfFormatter<Char, AF>::format(BasicCStringRef<Char> format_str)
         if (!*s)
             FMT_THROW(FormatError("invalid format string"));
         spec.type_ = static_cast<char>(*s++);
+
+        if (spec.type_ == 's')
+        {
+            // set the format type to the default if 's' is specified
+            spec.type_ = internal::DefaultType().visit(arg);
+        }
+
         if (arg.type <= Arg::LAST_INTEGER_TYPE)
         {
             // Normalize type.
@@ -574,20 +622,26 @@ void PrintfFormatter<Char, AF>::format(BasicCStringRef<Char> format_str)
     write(writer_, start, s);
 }
 
-template <typename Char>
-void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args)
+inline void printf(Writer &w, CStringRef format, ArgList args)
 {
-    PrintfFormatter<Char>(args, w).format(format);
+    PrintfFormatter<char>(args, w).format(format);
 }
+FMT_VARIADIC(void, printf, Writer &, CStringRef)
+
+inline void printf(WWriter &w, WCStringRef format, ArgList args)
+{
+    PrintfFormatter<wchar_t>(args, w).format(format);
+}
+FMT_VARIADIC(void, printf, WWriter &, WCStringRef)
 
 /**
-\rst
-Formats arguments and returns the result as a string.
+  \rst
+  Formats arguments and returns the result as a string.
 
-**Example**::
+  **Example**::
 
-std::string message = fmt::sprintf("The answer is %d", 42);
-\endrst
+    std::string message = fmt::sprintf("The answer is %d", 42);
+  \endrst
 */
 inline std::string sprintf(CStringRef format, ArgList args)
 {
@@ -606,26 +660,26 @@ inline std::wstring sprintf(WCStringRef format, ArgList args)
 FMT_VARIADIC_W(std::wstring, sprintf, WCStringRef)
 
 /**
-\rst
-Prints formatted data to the file *f*.
+  \rst
+  Prints formatted data to the file *f*.
 
-**Example**::
+  **Example**::
 
-fmt::fprintf(stderr, "Don't %s!", "panic");
-\endrst
-*/
+    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``.
+  \rst
+  Prints formatted data to ``stdout``.
 
-**Example**::
+  **Example**::
 
-fmt::printf("Elapsed time: %.2f seconds", 1.23);
-\endrst
-*/
+    fmt::printf("Elapsed time: %.2f seconds", 1.23);
+  \endrst
+ */
 inline int printf(CStringRef format, ArgList args)
 {
     return fprintf(stdout, format, args);
@@ -633,14 +687,14 @@ inline int printf(CStringRef format, ArgList args)
 FMT_VARIADIC(int, printf, CStringRef)
 
 /**
-\rst
-Prints formatted data to the stream *os*.
+  \rst
+  Prints formatted data to the stream *os*.
 
-**Example**::
+  **Example**::
 
-fprintf(cerr, "Don't %s!", "panic");
-\endrst
-*/
+    fprintf(cerr, "Don't %s!", "panic");
+  \endrst
+ */
 inline int fprintf(std::ostream &os, CStringRef format_str, ArgList args)
 {
     MemoryWriter w;

include/spdlog/fmt/bundled/time.h

@@ -0,0 +1,183 @@
+/*
+ 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

@@ -18,11 +18,17 @@
 #ifndef FMT_USE_WINDOWS_H
 #define FMT_USE_WINDOWS_H 0
 #endif
-#include <spdlog/fmt/bundled/format.h>
+#include "bundled/format.h"
+#if defined(SPDLOG_FMT_PRINTF)
+#include "bundled/printf.h"
+#endif
 
 #else //external fmtlib
 
 #include <fmt/format.h>
+#if defined(SPDLOG_FMT_PRINTF)
+#include <fmt/printf.h>
+#endif
 
 #endif
 

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 "fmt.h"
+#include "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 "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 "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 "sinks/base_sink.h"
+#include "common.h"
 
 #include <vector>
 #include <memory>
@@ -37,12 +37,24 @@ 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);
+
+
+#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);
+#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
 
     template <typename T> void log(level::level_enum lvl, const T&);
     template <typename T> void trace(const T&);
@@ -56,13 +68,9 @@ public:
     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 +78,13 @@ 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
@@ -81,6 +93,9 @@ protected:
     // return true if the given message level should trigger a flush
     bool _should_flush_on(const details::log_msg&);
 
+    // increment the message count (only if defined(SPDLOG_ENABLE_MESSAGE_COUNTER))
+    void _incr_msg_counter(details::log_msg &msg);
+
     const std::string _name;
     std::vector<sink_ptr> _sinks;
     formatter_ptr _formatter;
@@ -88,7 +103,8 @@ 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 "details/logger_impl.h"

include/spdlog/sinks/android_sink.h

@@ -7,11 +7,17 @@
 
 #if defined(__ANDROID__)
 
-#include <spdlog/sinks/sink.h>
+#include "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 "base_sink.h"
+#include "../common.h"
+#include "../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 "sink.h"
+#include "../formatter.h"
+#include "../common.h"
+#include "../details/log_msg.h"
 
 #include <mutex>
 
@@ -31,14 +31,20 @@ 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
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        _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 "../details/log_msg.h"
+#include "../details/null_mutex.h"
+#include "base_sink.h"
+#include "sink.h"
 
 #include <algorithm>
 #include <mutex>
@@ -44,14 +44,15 @@ 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 "base_sink.h"
+#include "../details/null_mutex.h"
+#include "../details/file_helper.h"
+#include "../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;
@@ -61,25 +62,37 @@ 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
+    // calc filename according to index and file extension if exists.
+    // e.g. calc_filename("logs/mylog.txt, 3) => "logs/mylog.3.txt".
+    static filename_t calc_filename(const filename_t& filename, std::size_t index)
     {
-        _file_helper.flush();
+        std::conditional<std::is_same<filename_t::value_type, char>::value, fmt::MemoryWriter, fmt::WMemoryWriter>::type w;
+        if (index)
+        {
+            filename_t basename, ext;
+            std::tie(basename, ext) = details::file_helper::split_by_extenstion(filename);
+            w.write(SPDLOG_FILENAME_T("{}.{}{}"), basename, index, ext);
+        }
+        else
+        {
+            w.write(SPDLOG_FILENAME_T("{}"), filename);
+        }
+        return w.str();
     }
 
 protected:
@@ -94,31 +107,26 @@ protected:
         _file_helper.write(msg);
     }
 
-private:
-    static filename_t calc_filename(const filename_t& filename, std::size_t index, const filename_t& extension)
+    void _flush() override
     {
-        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);
-        else
-            w.write(SPDLOG_FILENAME_T("{}.{}"), filename, extension);
-        return w.str();
+        _file_helper.flush();
     }
 
+
+private:
     // Rotate files:
     // log.txt -> log.1.txt
-    // log.1.txt -> log2.txt
-    // log.2.txt -> log3.txt
+    // log.1.txt -> log.2.txt
+    // log.2.txt -> log.3.txt
     // log.3.txt -> delete
-
     void _rotate()
     {
         using details::os::filename_to_str;
         _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 +143,6 @@ 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 +157,31 @@ 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 filename.YYYY-MM-DD_hh-mm.ext
+    static filename_t calc_filename(const filename_t& filename)
     {
         std::tm tm = spdlog::details::os::localtime();
+        filename_t basename, ext;
+        std::tie(basename, ext) = details::file_helper::split_by_extenstion(filename);
         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, ext);
         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.ext
  */
 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& filename)
     {
         std::tm tm = spdlog::details::os::localtime();
+        filename_t basename, ext;
+        std::tie(basename, ext) = details::file_helper::split_by_extenstion(filename);
         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, ext);
         return w.str();
     }
 };
@@ -179,41 +190,40 @@ 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 +241,6 @@ 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

@@ -5,12 +5,12 @@
 
 #pragma once
 
-#if defined(_MSC_VER)
+#if defined(_WIN32)
 
-#include <spdlog/sinks/base_sink.h>
-#include <spdlog/details/null_mutex.h>
+#include "base_sink.h"
+#include "../details/null_mutex.h"
 
-#include <WinBase.h>
+#include <winbase.h>
 
 #include <mutex>
 #include <string>
@@ -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 "base_sink.h"
+#include "../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 "../details/null_mutex.h"
+#include "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 "../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 "../details/null_mutex.h"
+#include "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 "../common.h"
 
 #ifdef SPDLOG_ENABLE_SYSLOG
 
-#include <spdlog/sinks/sink.h>
-#include <spdlog/details/log_msg.h>
+#include "sink.h"
+#include "../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 "base_sink.h"
+#include "../details/null_mutex.h"
+#include "../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/sinks/windebug_sink.h

@@ -0,0 +1,29 @@
+//
+// Copyright(c) 2017 Alexander Dalshov.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+#if defined(_WIN32)
+
+#include "msvc_sink.h"
+
+namespace spdlog
+{
+namespace sinks
+{
+
+/*
+* Windows debug sink (logging using OutputDebugStringA, synonym for msvc_sink)
+*/
+template<class Mutex>
+using windebug_sink = msvc_sink<Mutex>;
+
+typedef msvc_sink_mt windebug_sink_mt;
+typedef msvc_sink_st windebug_sink_st;
+
+}
+}
+
+#endif

include/spdlog/spdlog.h

@@ -7,11 +7,11 @@
 
 #pragma once
 
-#define SPDLOG_VERSION "0.12.0"
+#define SPDLOG_VERSION "0.16.2"
 
-#include <spdlog/tweakme.h>
-#include <spdlog/common.h>
-#include <spdlog/logger.h>
+#include "tweakme.h"
+#include "common.h"
+#include "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);
@@ -106,14 +106,14 @@ std::shared_ptr<logger> stderr_color_st(const std::string& logger_name);
 // Create and register a syslog logger
 //
 #ifdef SPDLOG_ENABLE_SYSLOG
-std::shared_ptr<logger> syslog_logger(const std::string& logger_name, const std::string& ident = "", int syslog_option = 0);
+std::shared_ptr<logger> syslog_logger(const std::string& logger_name, const std::string& ident = "", int syslog_option = 0, int syslog_facilty = (1<<3));
 #endif
 
 #if defined(__ANDROID__)
 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);
@@ -147,7 +154,7 @@ void drop_all();
 ///////////////////////////////////////////////////////////////////////////////
 //
 // Trace & Debug can be switched on/off at compile time for zero cost debug statements.
-// Uncomment SPDLOG_DEBUG_ON/SPDLOG_TRACE_ON in teakme.h to enable.
+// Uncomment SPDLOG_DEBUG_ON/SPDLOG_TRACE_ON in tweakme.h to enable.
 // SPDLOG_TRACE(..) will also print current file and line.
 //
 // Example:
@@ -160,7 +167,11 @@ void drop_all();
 #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__)
+#ifdef _MSC_VER
+#define SPDLOG_TRACE(logger, ...) logger->trace("[ " __FILE__ "(" SPDLOG_STR_HELPER(__LINE__) ") ] " __VA_ARGS__)
+#else
+#define SPDLOG_TRACE(logger, ...) logger->trace("[ " __FILE__ ":" SPDLOG_STR_HELPER(__LINE__) " ] " __VA_ARGS__)
+#endif
 #else
 #define SPDLOG_TRACE(logger, ...)
 #endif
@@ -171,8 +182,7 @@ void drop_all();
 #define SPDLOG_DEBUG(logger, ...)
 #endif
 
-
 }
 
 
-#include <spdlog/details/spdlog_impl.h>
+#include "details/spdlog_impl.h"

include/spdlog/tweakme.h

@@ -23,7 +23,7 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment if date/time logging is not needed and never appear in the log pattern.
-// This will prevent spdlog from quering the clock on each log call.
+// This will prevent spdlog from querying the clock on each log call.
 //
 // WARNING: If the log pattern contains any date/time while this flag is on, the result is undefined.
 //          You must set new pattern(spdlog::set_pattern(..") without any date/time in it
@@ -34,7 +34,7 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment if thread id logging is not needed (i.e. no %t in the log pattern).
-// This will prevent spdlog from quering the thread id on each log call.
+// This will prevent spdlog from querying the thread id on each log call.
 //
 // WARNING: If the log pattern contains thread id (i.e, %t) while this flag is on, the result is undefined.
 //
@@ -42,6 +42,16 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to prevent spdlog from caching thread ids in thread local storage.
+// By default spdlog saves thread ids in tls to gain a few micros for each call.
+//
+// WARNING: if your program forks, UNCOMMENT this flag to prevent undefined thread ids in the children logs.
+//
+// #define SPDLOG_DISABLE_TID_CACHING
+///////////////////////////////////////////////////////////////////////////////
+
+
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment if logger name logging is not needed.
 // This will prevent spdlog from copying the logger name  on each log call.
@@ -59,7 +69,7 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment to avoid locking in the registry operations (spdlog::get(), spdlog::drop() spdlog::register()).
-// Use only if your code never modifes concurrently the registry.
+// Use only if your code never modifies concurrently the registry.
 // Note that upon creating a logger the registry is modified by spdlog..
 //
 // #define SPDLOG_NO_REGISTRY_MUTEX
@@ -73,12 +83,14 @@
 // #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)
 //
@@ -94,6 +106,14 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to use printf-style messages in your logs instead of the usual
+// format-style used by default.
+//
+// #define SPDLOG_FMT_PRINTF
+///////////////////////////////////////////////////////////////////////////////
+
+
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment to enable syslog (disabled by default)
 //
@@ -101,8 +121,40 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 
+///////////////////////////////////////////////////////////////////////////////
+// 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 if your compiler doesn't support the "final" keyword.
+// The final keyword allows more optimizations in release
+// mode with recent compilers. See GCC's documentation for -Wsuggest-final-types
+// for instance.
+//
+// #define SPDLOG_NO_FINAL
+///////////////////////////////////////////////////////////////////////////////
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to enable message counting feature.
+// Use the %i in the logger pattern to display log message sequence id.
+//
+// #define SPDLOG_ENABLE_MESSAGE_COUNTER
+///////////////////////////////////////////////////////////////////////////////
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to customize level names (e.g. "MT TRACE")
+//
+// #define SPDLOG_LEVEL_NAMES  { "MY TRACE", "MY DEBUG", "MY INFO", "MY WARNING", "MY ERROR", "MY 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/Makefile

@@ -1,5 +1,11 @@
 CXX	?= g++
-CXXFLAGS	=  -Wall  -pedantic -std=c++11 -pthread -O2 -I../include
+ifeq ($(STYLE),printf)
+    $(info *** PRINTF STYLE ***)
+    CXXFLAGS	=  -DSPDLOG_FMT_PRINTF -Wall  -pedantic -std=c++11 -pthread -O2 -I../include
+else
+    $(info *** FORMAT STYLE ***)
+    CXXFLAGS	=  -Wall  -pedantic -std=c++11 -pthread -O2 -I../include
+endif
 LDPFALGS = -pthread
 
 CPP_FILES := $(wildcard *.cpp)

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() override
+    {}
+};
+
 TEST_CASE("default_error_handler", "[errors]]")
 {
     prepare_logdir();
@@ -13,8 +26,13 @@ TEST_CASE("default_error_handler", "[errors]]")
 
     auto logger = spdlog::create<spdlog::sinks::simple_file_sink_mt>("logger", filename, true);
     logger->set_pattern("%v");
+#if !defined(SPDLOG_FMT_PRINTF)
     logger->info("Test message {} {}", 1);
     logger->info("Test message {}", 2);
+#else
+    logger->info("Test message %d %d", 1);
+    logger->info("Test message %d", 2);
+#endif
     logger->flush();
 
     REQUIRE(file_contents(filename) == std::string("Test message 2\n"));
@@ -22,7 +40,10 @@ TEST_CASE("default_error_handler", "[errors]]")
 }
 
 
-struct custom_ex {};
+
+
+struct custom_ex
+{};
 TEST_CASE("custom_error_handler", "[errors]]")
 {
     prepare_logdir();
@@ -34,11 +55,26 @@ TEST_CASE("custom_error_handler", "[errors]]")
         throw custom_ex();
     });
     logger->info("Good message #1");
+#if !defined(SPDLOG_FMT_PRINTF)
     REQUIRE_THROWS_AS(logger->info("Bad format msg {} {}", "xxx"), custom_ex);
+#else
+    REQUIRE_THROWS_AS(logger->info("Bad format msg %s %s", "xxx"), custom_ex);
+#endif
     logger->info("Good message #2");
     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();
@@ -54,7 +90,11 @@ TEST_CASE("async_error_handler", "[errors]]")
             ofs << err_msg;
         });
         logger->info("Good message #1");
+#if !defined(SPDLOG_FMT_PRINTF)
         logger->info("Bad format msg {} {}", "xxx");
+#else
+        logger->info("Bad format msg %s %s", "xxx");
+#endif
         logger->info("Good message #2");
         spdlog::drop("logger"); //force logger to drain the queue and shutdown
         spdlog::set_sync_mode();
@@ -62,3 +102,25 @@ 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_helper.cpp

@@ -75,4 +75,44 @@ TEST_CASE("file_helper_reopen2", "[file_helper::reopen(false)]]")
 
 
 
+static void test_split_ext(const char* fname, const char* expect_base, const char* expect_ext)
+{	
+	spdlog::filename_t filename(fname);
+	spdlog::filename_t expected_base(expect_base);
+	spdlog::filename_t expected_ext(expect_ext);
+
+#ifdef _WIN32 // replace folder sep
+		std::replace(filename.begin(), filename.end(), '/', '\\'); 
+		std::replace(expected_base.begin(), expected_base.end(), '/', '\\');		
+#endif
+	spdlog::filename_t basename, ext;
+	std::tie(basename, ext) = file_helper::split_by_extenstion(filename);		
+	REQUIRE(basename == expected_base);
+	REQUIRE(ext == expected_ext);	
+}
+
+
+TEST_CASE("file_helper_split_by_extenstion", "[file_helper::split_by_extenstion()]]")
+{	
+	test_split_ext("mylog.txt", "mylog", ".txt");
+	test_split_ext(".mylog.txt", ".mylog", ".txt");
+	test_split_ext(".mylog", ".mylog", "");
+	test_split_ext("/aaa/bb.d/mylog", "/aaa/bb.d/mylog", "");
+	test_split_ext("/aaa/bb.d/mylog.txt", "/aaa/bb.d/mylog", ".txt");
+	test_split_ext("aaa/bbb/ccc/mylog.txt", "aaa/bbb/ccc/mylog", ".txt");
+	test_split_ext("aaa/bbb/ccc/mylog.", "aaa/bbb/ccc/mylog.", "");
+	test_split_ext("aaa/bbb/ccc/.mylog.txt", "aaa/bbb/ccc/.mylog", ".txt");
+	test_split_ext("/aaa/bbb/ccc/mylog.txt", "/aaa/bbb/ccc/mylog", ".txt");
+	test_split_ext("/aaa/bbb/ccc/.mylog", "/aaa/bbb/ccc/.mylog", "");
+	test_split_ext("../mylog.txt", "../mylog", ".txt");
+	test_split_ext(".././mylog.txt", ".././mylog", ".txt");
+	test_split_ext(".././mylog.txt/xxx", ".././mylog.txt/xxx", "");		
+	test_split_ext("/mylog.txt", "/mylog", ".txt");
+	test_split_ext("//mylog.txt", "//mylog", ".txt");
+	test_split_ext("", "", "");
+	test_split_ext(".", ".", "");
+	test_split_ext("..txt", ".", ".txt");
+}
+
+
 

tests/file_log.cpp

@@ -7,14 +7,18 @@
 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");
 
-
+#if !defined(SPDLOG_FMT_PRINTF)
     logger->info("Test message {}", 1);
     logger->info("Test message {}", 2);
+#else
+    logger->info("Test message %d", 1);
+    logger->info("Test message %d", 2);
+#endif
     logger->flush();
     REQUIRE(file_contents(filename) == std::string("Test message 1\nTest message 2\n"));
     REQUIRE(count_lines(filename) == 2);
@@ -24,7 +28,7 @@ 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");
@@ -33,8 +37,13 @@ TEST_CASE("flush_on", "[flush_on]]")
     logger->trace("Should not be flushed");
     REQUIRE(count_lines(filename) == 0);
 
+#if !defined(SPDLOG_FMT_PRINTF)
     logger->info("Test message {}", 1);
     logger->info("Test message {}", 2);
+#else
+    logger->info("Test message %d", 1);
+    logger->info("Test message %d", 2);
+#endif
     logger->flush();
     REQUIRE(file_contents(filename) == std::string("Should not be flushed\nTest message 1\nTest message 2\n"));
     REQUIRE(count_lines(filename) == 3);
@@ -47,10 +56,16 @@ TEST_CASE("rotating_file_logger1", "[rotating_logger]]")
     auto logger = spdlog::rotating_logger_mt("logger", basename, 1024, 0);
 
     for (int i = 0; i < 10; ++i)
+    {
+#if !defined(SPDLOG_FMT_PRINTF)
         logger->info("Test message {}", i);
+#else
+        logger->info("Test message %d", i);
+#endif
+    }
 
     logger->flush();
-    auto filename = basename + ".txt";
+    auto filename = basename;
     REQUIRE(count_lines(filename) == 10);
 }
 
@@ -64,14 +79,20 @@ 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++)
+    {
+#if !defined(SPDLOG_FMT_PRINTF)
         logger->info("Test message {}", i);
+#else
+        logger->info("Test message %d", i);
+#endif
+    }
 
     logger->flush();
     REQUIRE(get_filesize(filename) <= 1024);
-    auto filename1 = basename + ".1.txt";
+    auto filename1 = basename + ".1";
     REQUIRE(get_filesize(filename1) <= 1024);
 }
 
@@ -83,12 +104,18 @@ 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);
     for (int i = 0; i < 10; ++i)
+    {
+#if !defined(SPDLOG_FMT_PRINTF)
         logger->info("Test message {}", i);
+#else
+        logger->info("Test message %d", i);
+#endif
+    }
 
     auto filename = w.str();
     REQUIRE(count_lines(filename) == 10);
@@ -106,11 +133,17 @@ 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)
+    {
+#if !defined(SPDLOG_FMT_PRINTF)
         logger->info("Test message {}", i);
+#else
+        logger->info("Test message %d", i);
+#endif
+    }
     logger->flush();
     auto filename = w.str();
     REQUIRE(count_lines(filename) == 10);
@@ -118,11 +151,11 @@ 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();
     }
 };
@@ -138,14 +171,78 @@ 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)
+    {
+#if !defined(SPDLOG_FMT_PRINTF)
         logger->info("Test message {}", i);
+#else
+        logger->info("Test message %d", i);
+#endif
+    }
 
     logger->flush();
     auto filename = w.str();
     REQUIRE(count_lines(filename) == 10);
 }
 
+
+/*
+ * File name calculations
+ */
+
+TEST_CASE("rotating_file_sink::calc_filename1", "[rotating_file_sink]]")
+{
+    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename("rotated.txt", 3);
+    REQUIRE(filename == "rotated.3.txt");
+}
+
+TEST_CASE("rotating_file_sink::calc_filename2", "[rotating_file_sink]]")
+{
+    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename("rotated", 3);
+    REQUIRE(filename == "rotated.3");
+}
+
+TEST_CASE("rotating_file_sink::calc_filename3", "[rotating_file_sink]]")
+{
+    auto filename = spdlog::sinks::rotating_file_sink_st::calc_filename("rotated.txt", 0);
+    REQUIRE(filename == "rotated.txt");
+}
+
+
+
+
+
+// regex supported only from gcc 4.9 and above
+#if defined (_MSC_VER) || !(__GNUC__ <= 4 && __GNUC_MINOR__ < 9)
+#include <regex>
+TEST_CASE("daily_file_sink::default_daily_file_name_calculator1", "[daily_file_sink]]")
+{
+    // daily_YYYY-MM-DD_hh-mm.txt
+    auto filename = spdlog::sinks::default_daily_file_name_calculator::calc_filename("daily.txt");
+    std::regex re(R"(^daily_(19|20)\d\d-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])_\d\d-[0-5][0-9].txt$)");
+    std::smatch match;
+    REQUIRE(std::regex_match(filename, match, re));
+}
+
+TEST_CASE("daily_file_sink::default_daily_file_name_calculator2", "[daily_file_sink]]")
+{
+    // daily_YYYY-MM-DD_hh-mm.txt
+    auto filename = spdlog::sinks::default_daily_file_name_calculator::calc_filename("daily");
+    std::regex re(R"(^daily_(19|20)\d\d-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])_\d\d-[0-5][0-9]$)");
+    std::smatch match;
+    REQUIRE(std::regex_match(filename, match, re));
+}
+
+TEST_CASE("daily_file_sink::dateonly_daily_file_name_calculator", "[daily_file_sink]]")
+{
+    // daily_YYYY-MM-DD_hh-mm.txt
+    auto filename = spdlog::sinks::dateonly_daily_file_name_calculator::calc_filename("daily.txt");
+    // date regex based on https://www.regular-expressions.info/dates.html
+    std::regex re(R"(^daily_(19|20)\d\d-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])\.txt$)");
+    std::smatch match;
+    REQUIRE(std::regex_match(filename, match, re));
+}
+#endif

tests/includes.h

@@ -6,10 +6,12 @@
 #include <ostream>
 #include <chrono>
 #include <exception>
-
 #include "catch.hpp"
 #include "utils.h"
 
+#define SPDLOG_TRACE_ON
+#define SPDLOG_DEBUG_ON
+
 #include "../include/spdlog/spdlog.h"
 #include "../include/spdlog/sinks/null_sink.h"
 #include "../include/spdlog/sinks/ostream_sink.h"

tests/test_macros.cpp

@@ -0,0 +1,50 @@
+/*
+* This content is released under the MIT License as specified in https://raw.githubusercontent.com/gabime/spdlog/master/LICENSE
+*/
+
+#include "includes.h"
+
+TEST_CASE("debug and trace w/o format string", "[macros]]")
+{
+    prepare_logdir();
+    std::string filename = "logs/simple_log";
+
+    auto logger = spdlog::create<spdlog::sinks::simple_file_sink_mt>("logger", filename);
+    logger->set_pattern("%v");
+    logger->set_level(spdlog::level::trace);
+
+    SPDLOG_TRACE(logger, "Test message 1");
+    //SPDLOG_DEBUG(logger, "Test message 2");
+    SPDLOG_DEBUG(logger, "Test message 2");
+    logger->flush();
+
+    REQUIRE(ends_with(file_contents(filename), "Test message 2\n"));
+    REQUIRE(count_lines(filename) == 2);
+}
+
+
+TEST_CASE("debug and trace with format strings", "[macros]]")
+{
+    prepare_logdir();
+    std::string filename = "logs/simple_log";
+
+    auto logger = spdlog::create<spdlog::sinks::simple_file_sink_mt>("logger", filename);
+    logger->set_pattern("%v");
+    logger->set_level(spdlog::level::trace);
+
+#if !defined(SPDLOG_FMT_PRINTF)
+    SPDLOG_TRACE(logger, "Test message {}", 1);
+    //SPDLOG_DEBUG(logger, "Test message 2");
+    SPDLOG_DEBUG(logger, "Test message {}", 222);
+#else
+    SPDLOG_TRACE(logger, "Test message %d", 1);
+    //SPDLOG_DEBUG(logger, "Test message 2");
+    SPDLOG_DEBUG(logger, "Test message %d", 222);
+#endif
+
+    logger->flush();
+
+    REQUIRE(ends_with(file_contents(filename), "Test message 222\n"));
+    REQUIRE(count_lines(filename) == 2);
+}
+

tests/tests.vcxproj

@@ -131,6 +131,7 @@
     <ClCompile Include="format.cpp" />
     <ClCompile Include="main.cpp" />
     <ClCompile Include="registry.cpp" />
+    <ClCompile Include="test_macros.cpp" />
     <ClCompile Include="utils.cpp" />
   </ItemGroup>
   <ItemGroup>

tests/tests.vcxproj.filters

@@ -36,6 +36,9 @@
     <ClCompile Include="errors.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="test_macros.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
 }
 
 
@@ -43,3 +46,11 @@ std::size_t get_filesize(const std::string& filename)
 
     return static_cast<std::size_t>(ifs.tellg());
 }
+
+
+// source: https://stackoverflow.com/a/2072890/192001
+bool ends_with(std::string const & value, std::string const & ending)
+{
+    if (ending.size() > value.size()) return false;
+    return std::equal(ending.rbegin(), ending.rend(), value.rbegin());
+}

tests/utils.h

@@ -13,3 +13,4 @@ std::size_t count_lines(const std::string& filename);
 
 std::size_t get_filesize(const std::string& filename);
 
+bool ends_with(std::string const & value, std::string const & ending);