wincolor color formatting support

example/example.cpp

@@ -58,8 +58,8 @@ int main(int, char *[])
         daily_logger->info(123.44);
 
         // Customize msg format for all messages
-        spd::set_pattern("*** [%H:%M:%S %z] [thread %t] %v ***");
-        rotating_logger->info("This is another message with custom format");
+        spd::set_pattern("[%^+++%$] [%H:%M:%S %z] [thread %t] %v");
+        console->info("This a message with custom format (and custom color range between the '%^' and '%$')");
 
         // Runtime log levels
         spd::set_level(spd::level::info); // Set global log level to info

include/spdlog/sinks/ansicolor_sink.h

@@ -28,7 +28,7 @@ public:
         : target_file_(file)
     {
         should_do_colors_ = details::os::in_terminal(file) && details::os::is_color_terminal();
-        colors_[level::trace] = magenta;
+        colors_[level::trace] = white;
         colors_[level::debug] = cyan;
         colors_[level::info] = green;
         colors_[level::warn] = yellow + bold;

include/spdlog/sinks/wincolor_sink.h

@@ -25,6 +25,7 @@ class wincolor_sink : public base_sink<Mutex>
 public:
     const WORD BOLD = FOREGROUND_INTENSITY;
     const WORD RED = FOREGROUND_RED;
+	const WORD GREEN = FOREGROUND_GREEN;
     const WORD CYAN = FOREGROUND_GREEN | FOREGROUND_BLUE;
     const WORD WHITE = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
     const WORD YELLOW = FOREGROUND_RED | FOREGROUND_GREEN;
@@ -32,9 +33,9 @@ public:
     wincolor_sink(HANDLE std_handle)
         : out_handle_(std_handle)
     {
-        colors_[level::trace] = CYAN;
+        colors_[level::trace] = WHITE;
         colors_[level::debug] = CYAN;
-        colors_[level::info] = WHITE | BOLD;
+        colors_[level::info] = GREEN;
         colors_[level::warn] = YELLOW | BOLD;
         colors_[level::err] = RED | BOLD;                         // red bold
         colors_[level::critical] = BACKGROUND_RED | WHITE | BOLD; // white bold on red background
@@ -59,10 +60,22 @@ public:
 protected:
     void _sink_it(const details::log_msg &msg) override
     {
-        auto color = colors_[msg.level];
-        auto orig_attribs = set_console_attribs(color);
-        WriteConsoleA(out_handle_, msg.formatted.data(), static_cast<DWORD>(msg.formatted.size()), nullptr, nullptr);
-        SetConsoleTextAttribute(out_handle_, orig_attribs); // reset to orig colors
+		if (msg.color_range_end > msg.color_range_start)
+		{
+			// before color range
+			_print_range(msg, 0, msg.color_range_start);
+			
+			// in color range			
+			auto orig_attribs = set_console_attribs(colors_[msg.level]);
+			_print_range(msg, msg.color_range_start, msg.color_range_end);			
+			::SetConsoleTextAttribute(out_handle_, orig_attribs); // reset to orig colors
+			// after color range
+			_print_range(msg, msg.color_range_end, msg.formatted.size());			
+		}
+		else // print without colors if color range is invalid
+		{
+			_print_range(msg, 0, msg.formatted.size());			
+		}
     }
 
     void _flush() override
@@ -86,6 +99,13 @@ private:
         SetConsoleTextAttribute(out_handle_, attribs | back_color);
         return orig_buffer_info.wAttributes; // return orig attribs
     }
+
+	// print a range of formatted message to console
+	void _print_range(const details::log_msg &msg, size_t start, size_t end)
+	{
+		DWORD size = static_cast<DWORD>(end - start);
+		WriteConsoleA(out_handle_, msg.formatted.data() + start, size, nullptr, nullptr);		
+	}
 };
 
 //