added --quiet option to suppress default logging to stdout (#446)

added --quiet option for zenserver to suppress default logging to stdout

2 files changed, 13 insertions, 2 deletions

diff --git a/src/zencore/include/zencore/logging.h b/src/zencore/include/zencore/logging.h
index 462f2b4e0..c0d966475 100644
--- a/src/zencore/include/zencore/logging.h
+++ b/src/zencore/include/zencore/logging.h
@@ -16,6 +16,7 @@ namespace zen::logging {
 spdlog::logger& Default();
 void			SetDefault(std::shared_ptr<spdlog::logger> NewDefaultLogger);
 spdlog::logger& ConsoleLog();
+void			SuppressConsoleLog();
 spdlog::logger& Get(std::string_view Name);
 spdlog::logger* ErrorLog();
 void			SetErrorLog(std::shared_ptr<spdlog::logger>&& NewErrorLogger);
diff --git a/src/zencore/logging.cpp b/src/zencore/logging.cpp
index dc923f45e..ff37af368 100644
--- a/src/zencore/logging.cpp
+++ b/src/zencore/logging.cpp
@@ -5,6 +5,7 @@
 #include <zencore/string.h>
 #include <zencore/testing.h>
 
+#include <spdlog/sinks/null_sink.h>
 #include <spdlog/sinks/stdout_color_sinks.h>
 
 namespace zen {
@@ -46,13 +47,22 @@ Get(std::string_view Name)
 std::once_flag					ConsoleInitFlag;
 std::shared_ptr<spdlog::logger> ConLogger;
 
+void
+SuppressConsoleLog()
+{
+	ConLogger = spdlog::null_logger_mt("console");
+}
+
 spdlog::logger&
 ConsoleLog()
 {
 	std::call_once(ConsoleInitFlag, [&] {
-		ConLogger = spdlog::stdout_color_mt("console");
+		if (!ConLogger)
+		{
+			ConLogger = spdlog::stdout_color_mt("console");
 
-		ConLogger->set_pattern("%v");
+			ConLogger->set_pattern("%v");
+		}
 	});
 
 	return *ConLogger;