Added default logger API

include/spdlog/details/os.h

@@ -185,7 +185,7 @@ inline int rename(const filename_t &filename1, const filename_t &filename2) SPDL
 }
 
 // Return if file exists
-inline bool file_exists(const filename_t &filename)  SPDLOG_NOEXCEPT
+inline bool file_exists(const filename_t &filename) SPDLOG_NOEXCEPT
 {
 #ifdef _WIN32
 #ifdef SPDLOG_WCHAR_FILENAMES

include/spdlog/details/pattern_formatter.h

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