Added default logger API

.clang-format

@@ -88,7 +88,7 @@ PenaltyExcessCharacter: 1000000
 PenaltyReturnTypeOnItsOwnLine: 60
 PointerAlignment: Right
 ReflowComments:  true
-SortIncludes:    true
+SortIncludes:    false
 SortUsingDeclarations: true
 SpaceAfterCStyleCast: false
 SpaceAfterTemplateKeyword: false

CMakeLists.txt

@@ -4,7 +4,7 @@
 #
 
 cmake_minimum_required(VERSION 3.1)
-project(spdlog VERSION 1.2.0 LANGUAGES CXX)
+project(spdlog VERSION 1.3.0 LANGUAGES CXX)
 include(CTest)
 include(CMakeDependentOption)
 include(GNUInstallDirs)

bench/async_bench.cpp

@@ -6,10 +6,11 @@
 //
 // bench.cpp : spdlog benchmarks
 //
+#include "spdlog/spdlog.h"
 #include "spdlog/async.h"
 #include "spdlog/sinks/basic_file_sink.h"
 #include "spdlog/sinks/stdout_color_sinks.h"
-#include "spdlog/spdlog.h"
+
 #include "utils.h"
 #include <atomic>
 #include <iostream>

bench/bench.cpp

@@ -6,12 +6,13 @@
 //
 // bench.cpp : spdlog benchmarks
 //
+#include "spdlog/spdlog.h"
 #include "spdlog/async.h"
 #include "spdlog/sinks/basic_file_sink.h"
 #include "spdlog/sinks/daily_file_sink.h"
 #include "spdlog/sinks/null_sink.h"
 #include "spdlog/sinks/rotating_file_sink.h"
-#include "spdlog/spdlog.h"
+
 #include "utils.h"
 #include <atomic>
 #include <cstdlib> // EXIT_FAILURE

bench/latency.cpp

@@ -6,12 +6,14 @@
 //
 // latency.cpp : spdlog latency benchmarks
 //
+
+#include "spdlog/spdlog.h"
 #include "spdlog/async.h"
 #include "spdlog/sinks/basic_file_sink.h"
 #include "spdlog/sinks/daily_file_sink.h"
 #include "spdlog/sinks/null_sink.h"
 #include "spdlog/sinks/rotating_file_sink.h"
-#include "spdlog/spdlog.h"
+
 #include "utils.h"
 #include <atomic>
 #include <cstdlib>

example/multisink.cpp

+#include "spdlog/spdlog.h"
 #include "spdlog/sinks/basic_file_sink.h"
 #include "spdlog/sinks/stdout_sinks.h"
-#include "spdlog/spdlog.h"
+
 #include <iostream>
 #include <memory>
 

include/spdlog/details/pattern_formatter.h

@@ -508,10 +508,13 @@ class full_formatter final : public flag_formatter
 #endif
 
 #ifndef SPDLOG_NO_NAME
+        if (!msg.logger_name->empty())
+        {
             dest.push_back('[');
             fmt_helper::append_str(*msg.logger_name, dest);
             dest.push_back(']');
             dest.push_back(' ');
+        }
 #endif
 
         dest.push_back('[');

include/spdlog/details/registry.h

@@ -14,6 +14,14 @@
 #include "spdlog/details/periodic_worker.h"
 #include "spdlog/logger.h"
 
+// support for the default stdout color logger
+#ifdef _WIN32
+#include "spdlog/sinks/wincolor_sink.h"
+#else
+#include "spdlog/sinks/ansicolor_sink.h"
+
+#endif
+
 #include <chrono>
 #include <functional>
 #include <memory>
@@ -66,6 +74,25 @@ public:
         return found == loggers_.end() ? nullptr : found->second;
     }
 
+    std::shared_ptr<logger> get_default_logger() const
+    {
+        return default_logger_;
+    }
+
+    // set default logger.
+    // default logger is stored in default_logger_ (for faster retrieval) and in the map of existing loggers.
+    void set_default_logger(std::shared_ptr<logger> new_default_logger)
+    {
+        std::lock_guard<std::mutex> lock(logger_map_mutex_);
+        // remove previous default logger from the map
+        if (default_logger_ != nullptr)
+        {
+            loggers_.erase(default_logger_->name());
+        }
+        loggers_[new_default_logger->name()] = new_default_logger;
+        default_logger_ = std::move(new_default_logger);
+    }
+
     void set_tp(std::shared_ptr<thread_pool> tp)
     {
         std::lock_guard<std::recursive_mutex> lock(tp_mutex_);
@@ -154,6 +181,7 @@ public:
     {
         std::lock_guard<std::mutex> lock(logger_map_mutex_);
         loggers_.clear();
+        default_logger_.reset();
     }
 
     // clean all reasources and threads started by the registry
@@ -187,6 +215,15 @@ private:
     registry()
         : formatter_(new pattern_formatter("%+"))
     {
+        // create default logger (stdout_color_mt).
+#ifdef _WIN32
+        auto color_sink = std::make_shared<sinks::wincolor_stdout_sink_mt>();
+#else
+        auto color_sink = std::make_shared<sinks::ansicolor_stdout_sink_mt>();
+#endif
+        SPDLOG_CONSTEXPR const char *default_logger_name = "";
+        default_logger_ = std::make_shared<spdlog::logger>(default_logger_name, std::move(color_sink));
+        loggers_[default_logger_name] = default_logger_;
     }
 
     ~registry() = default;
@@ -208,6 +245,7 @@ private:
     log_err_handler err_handler_;
     std::shared_ptr<thread_pool> tp_;
     std::unique_ptr<periodic_worker> periodic_flusher_;
+    std::shared_ptr<logger> default_logger_;
 };
 
 } // namespace details

include/spdlog/sinks/android_sink.h

@@ -5,6 +5,10 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/details/fmt_helper.h"
 #include "spdlog/details/null_mutex.h"
 #include "spdlog/details/os.h"

include/spdlog/sinks/ansicolor_sink.h

@@ -5,6 +5,10 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/details/console_globals.h"
 #include "spdlog/details/null_mutex.h"
 #include "spdlog/details/os.h"

include/spdlog/sinks/basic_file_sink.h

@@ -4,10 +4,14 @@
 //
 
 #pragma once
+
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/details/file_helper.h"
 #include "spdlog/details/null_mutex.h"
 #include "spdlog/sinks/base_sink.h"
-#include "spdlog/spdlog.h"
 
 #include <mutex>
 #include <string>

include/spdlog/sinks/daily_file_sink.h

@@ -4,11 +4,15 @@
 //
 
 #pragma once
+
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/details/file_helper.h"
 #include "spdlog/details/null_mutex.h"
 #include "spdlog/fmt/fmt.h"
 #include "spdlog/sinks/base_sink.h"
-#include "spdlog/spdlog.h"
 
 #include <chrono>
 #include <cstdio>

include/spdlog/sinks/dist_sink.h

@@ -5,6 +5,10 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "base_sink.h"
 #include "spdlog/details/log_msg.h"
 #include "spdlog/details/null_mutex.h"

include/spdlog/sinks/msvc_sink.h

@@ -5,6 +5,10 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #if defined(_WIN32)
 
 #include "spdlog/details/null_mutex.h"

include/spdlog/sinks/null_sink.h

@@ -5,6 +5,10 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/details/null_mutex.h"
 #include "spdlog/sinks/base_sink.h"
 
@@ -25,4 +29,17 @@ using null_sink_mt = null_sink<std::mutex>;
 using null_sink_st = null_sink<details::null_mutex>;
 
 } // namespace sinks
+
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> null_logger_mt(const std::string &logger_name)
+{
+    return Factory::template create<sinks::null_sink_mt>(logger_name);
+}
+
+template<typename Factory = default_factory>
+inline std::shared_ptr<logger> null_logger_st(const std::string &logger_name)
+{
+    return Factory::template create<sinks::null_sink_st>(logger_name);
+}
+
 } // namespace spdlog

include/spdlog/sinks/ostream_sink.h

@@ -5,6 +5,10 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/details/null_mutex.h"
 #include "spdlog/sinks/base_sink.h"
 

include/spdlog/sinks/rotating_file_sink.h

@@ -4,11 +4,15 @@
 //
 
 #pragma once
+
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/details/file_helper.h"
 #include "spdlog/details/null_mutex.h"
 #include "spdlog/fmt/fmt.h"
 #include "spdlog/sinks/base_sink.h"
-#include "spdlog/spdlog.h"
 
 #include <cerrno>
 #include <chrono>

include/spdlog/sinks/stdout_color_sinks.h

@@ -5,7 +5,10 @@
 
 #pragma once
 
-#include "spdlog/spdlog.h"
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #ifdef _WIN32
 #include "spdlog/sinks/wincolor_sink.h"
 #else

include/spdlog/sinks/stdout_sinks.h

@@ -5,9 +5,12 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/details/console_globals.h"
 #include "spdlog/details/null_mutex.h"
-#include "spdlog/spdlog.h"
 
 #include <cstdio>
 #include <memory>

include/spdlog/sinks/syslog_sink.h

@@ -5,8 +5,11 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/sinks/base_sink.h"
-#include "spdlog/spdlog.h"
 
 #include <array>
 #include <string>

include/spdlog/sinks/wincolor_sink.h

@@ -5,6 +5,10 @@
 
 #pragma once
 
+#ifndef SPDLOG_H
+#error "spdlog.h must be included before this file."
+#endif
+
 #include "spdlog/common.h"
 #include "spdlog/details/console_globals.h"
 #include "spdlog/details/null_mutex.h"

include/spdlog/spdlog.h

@@ -14,8 +14,6 @@
 #include "spdlog/logger.h"
 #include "spdlog/version.h"
 
-#include "spdlog/default_logger.h"
-
 #include <chrono>
 #include <functional>
 #include <memory>
@@ -128,19 +126,173 @@ inline void shutdown()
     details::registry::instance().shutdown();
 }
 
-///////////////////////////////////////////////////////////////////////////////
 //
-// Trace & Debug can be switched on/off at compile time for zero cost debug
-// statements.
+// API for using default logger (stdout_color_mt),
+// e.g: spdlog::info("Message {}", 1);
+//
+// The default logger object can be accessed using the spdlog::get():
+// For example, to add another sink to it:
+// spdlog::get()->sinks()->push_back(some_sink);
+//
+// The default logger can replaced using spdlog::set_default_logger(new_logger).
+// For example, to replace it with a file logger:
+// spdlog::set_default_logger(std::move(spdlog::basic_logger_st("mylog.txt"));
+//
+
+// Return the default logger
+// inline std::shared_ptr<spdlog::logger> get()
+//{
+//    return details::registry::instance().get_default_logger();
+//}
+
+inline std::shared_ptr<spdlog::logger> get()
+{
+    return details::registry::instance().get_default_logger();
+}
+
+inline void set_default_logger(std::shared_ptr<spdlog::logger> default_logger)
+{
+    details::registry::instance().set_default_logger(std::move(default_logger));
+}
+
+template<typename... Args>
+inline void log(level::level_enum lvl, const char *fmt, const Args &... args)
+{
+    get()->log(lvl, fmt, args...);
+}
+
+template<typename... Args>
+inline void trace(const char *fmt, const Args &... args)
+{
+    get()->trace(fmt, args...);
+}
+
+template<typename... Args>
+inline void debug(const char *fmt, const Args &... args)
+{
+    get()->debug(fmt, args...);
+}
+
+template<typename... Args>
+inline void info(const char *fmt, const Args &... args)
+{
+    get()->info(fmt, args...);
+}
+
+template<typename... Args>
+inline void warn(const char *fmt, const Args &... args)
+{
+    get()->warn(fmt, args...);
+}
+
+template<typename... Args>
+inline void error(const char *fmt, const Args &... args)
+{
+    get()->error(fmt, args...);
+}
+
+template<typename... Args>
+inline void critical(const char *fmt, const Args &... args)
+{
+    get()->critical(fmt, args...);
+}
+
+template<typename T>
+inline void log(level::level_enum lvl, const T &msg)
+{
+    get()->log(lvl, msg);
+}
+
+template<typename T>
+inline void trace(const T &msg)
+{
+    get()->trace(msg);
+}
+
+template<typename T>
+inline void debug(const T &msg)
+{
+    get()->debug(msg);
+}
+
+template<typename T>
+inline void info(const T &msg)
+{
+    get()->info(msg);
+}
+
+template<typename T>
+inline void warn(const T &msg)
+{
+    get()->warn(msg);
+}
+
+template<typename T>
+inline void error(const T &msg)
+{
+    get()->error(msg);
+}
+
+template<typename T>
+inline void critical(const T &msg)
+{
+    get()->critical(msg);
+}
+
+#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
+template<typename... Args>
+inline void log(level::level_enum lvl, const wchar_t *fmt, const Args &... args)
+{
+    get()->log(lvl, fmt, args...);
+}
+
+template<typename... Args>
+inline void trace(const wchar_t *fmt, const Args &... args)
+{
+    get()->trace(fmt, args...);
+}
+
+template<typename... Args>
+inline void debug(const wchar_t *fmt, const Args &... args)
+{
+    get()->debug(fmt, args...);
+}
+
+template<typename... Args>
+inline void info(const wchar_t *fmt, const Args &... args)
+{
+    get()->info(fmt, args...);
+}
+
+template<typename... Args>
+inline void warn(const wchar_t *fmt, const Args &... args)
+{
+    get()->warn(fmt, args...);
+}
+
+template<typename... Args>
+inline void error(const wchar_t *fmt, const Args &... args)
+{
+    get()->error(fmt, args...);
+}
+
+template<typename... Args>
+inline void critical(const wchar_t *fmt, const Args &... args)
+{
+    get()->critical(fmt, args...);
+}
+
+#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
+
+//
+// Trace & Debug can be switched on/off at compile time with zero cost.
 // Uncomment SPDLOG_DEBUG_ON/SPDLOG_TRACE_ON in tweakme.h to enable.
 // SPDLOG_TRACE(..) will also print current file and line.
 //
 // Example:
 // spdlog::set_level(spdlog::level::trace);
-// SPDLOG_TRACE(my_logger, "some trace message");
 // SPDLOG_TRACE(my_logger, "another trace message {} {}", 1, 2);
-// SPDLOG_DEBUG(my_logger, "some debug message {} {}", 3, 4);
-///////////////////////////////////////////////////////////////////////////////
+//
 
 #ifdef SPDLOG_TRACE_ON
 #define SPDLOG_STR_H(x) #x
@@ -165,5 +317,4 @@ inline void shutdown()
 #endif
 
 } // namespace spdlog
-
-#endif // #define SPDLOG_H
+#endif // SPDLOG_H

include/spdlog/version.h

@@ -6,7 +6,7 @@
 #pragma once
 
 #define SPDLOG_VER_MAJOR 1
-#define SPDLOG_VER_MINOR 2
+#define SPDLOG_VER_MINOR 3
 #define SPDLOG_VER_PATCH 0
 
 #define SPDLOG_VERSION (SPDLOG_VER_MAJOR * 10000 + SPDLOG_VER_MINOR * 100 + SPDLOG_VER_PATCH)

tests/includes.h

@@ -14,6 +14,7 @@
 #define SPDLOG_DEBUG_ON
 #define SPDLOG_ENABLE_MESSAGE_COUNTER
 
+#include "spdlog/spdlog.h"
 #include "spdlog/async.h"
 #include "spdlog/sinks/basic_file_sink.h"
 #include "spdlog/sinks/daily_file_sink.h"
@@ -21,4 +22,3 @@
 #include "spdlog/sinks/ostream_sink.h"
 #include "spdlog/sinks/rotating_file_sink.h"
 #include "spdlog/sinks/stdout_color_sinks.h"
-#include "spdlog/spdlog.h"

tests/registry.cpp

@@ -12,8 +12,7 @@ TEST_CASE("register_drop", "[registry]")
     REQUIRE_THROWS_AS(spdlog::create<spdlog::sinks::null_sink_mt>(tested_logger_name), const spdlog::spdlog_ex &);
 }
 
-TEST_CASE("explicit register"
-          "[registry]")
+TEST_CASE("explicit register", "[registry]")
 {
     spdlog::drop_all();
     auto logger = std::make_shared<spdlog::logger>(tested_logger_name, std::make_shared<spdlog::sinks::null_sink_st>());
@@ -23,8 +22,7 @@ TEST_CASE("explicit register"
     REQUIRE_THROWS_AS(spdlog::create<spdlog::sinks::null_sink_mt>(tested_logger_name), const spdlog::spdlog_ex &);
 }
 
-TEST_CASE("apply_all"
-          "[registry]")
+TEST_CASE("apply_all", "[registry]")
 {
     spdlog::drop_all();
     auto logger = std::make_shared<spdlog::logger>(tested_logger_name, std::make_shared<spdlog::sinks::null_sink_st>());
@@ -45,8 +43,7 @@ TEST_CASE("apply_all"
     REQUIRE(counter == 1);
 }
 
-TEST_CASE("drop"
-          "[registry]")
+TEST_CASE("drop", "[registry]")
 {
     spdlog::drop_all();
     spdlog::create<spdlog::sinks::null_sink_mt>(tested_logger_name);
@@ -54,8 +51,7 @@ TEST_CASE("drop"
     REQUIRE_FALSE(spdlog::get(tested_logger_name));
 }
 
-TEST_CASE("drop_all"
-          "[registry]")
+TEST_CASE("drop_all", "[registry]")
 {
     spdlog::drop_all();
     spdlog::create<spdlog::sinks::null_sink_mt>(tested_logger_name);
@@ -65,8 +61,7 @@ TEST_CASE("drop_all"
     REQUIRE_FALSE(spdlog::get(tested_logger_name2));
 }
 
-TEST_CASE("drop non existing"
-          "[registry]")
+TEST_CASE("drop non existing", "[registry]")
 {
     spdlog::drop_all();
     spdlog::create<spdlog::sinks::null_sink_mt>(tested_logger_name);
@@ -75,3 +70,11 @@ TEST_CASE("drop non existing"
     REQUIRE(spdlog::get(tested_logger_name));
     spdlog::drop_all();
 }
+
+TEST_CASE("default logger", "[registry]")
+{
+    spdlog::drop_all();
+    spdlog::set_default_logger(std::move(spdlog::null_logger_st(tested_logger_name)));
+    REQUIRE(spdlog::get(tested_logger_name) == spdlog::get());
+    spdlog::drop_all();
+}

tests/test_misc.cpp

@@ -191,3 +191,42 @@ TEST_CASE("message_counter", "[message_counter]")
 
     REQUIRE(oss.str() == "000002 Hello again" + std::string(spdlog::details::os::default_eol));
 }
+
+TEST_CASE("default logger API", "[default logger]")
+{
+    std::ostringstream oss;
+    auto oss_sink = std::make_shared<spdlog::sinks::ostream_sink_mt>(oss);
+
+    spdlog::set_default_logger(std::make_shared<spdlog::logger>("oss", oss_sink));
+    spdlog::get()->set_pattern("%v");
+
+    spdlog::get()->set_level(spdlog::level::trace);
+    spdlog::trace("hello trace");
+    REQUIRE(oss.str() == "hello trace" + std::string(spdlog::details::os::default_eol));
+
+    oss.str("");
+    spdlog::debug("hello debug");
+    REQUIRE(oss.str() == "hello debug" + std::string(spdlog::details::os::default_eol));
+
+    oss.str("");
+    spdlog::info("Hello");
+    REQUIRE(oss.str() == "Hello" + std::string(spdlog::details::os::default_eol));
+
+    oss.str("");
+    spdlog::warn("Hello again {}", 2);
+    REQUIRE(oss.str() == "Hello again 2" + std::string(spdlog::details::os::default_eol));
+
+    oss.str("");
+    spdlog::error(123);
+    REQUIRE(oss.str() == "123" + std::string(spdlog::details::os::default_eol));
+
+    oss.str("");
+    spdlog::critical(std::string("some string"));
+    REQUIRE(oss.str() == "some string" + std::string(spdlog::details::os::default_eol));
+
+    oss.str("");
+    spdlog::set_level(spdlog::level::info);
+    spdlog::debug("should not be logged");
+    REQUIRE(oss.str().empty());
+    spdlog::drop_all();
+}