From b69f2eeaf4afcf1ba182c8392401cd50b1e470af Mon Sep 17 00:00:00 2001
From: Etienne Dechamps <etienne@edechamps.fr>
Date: Sat, 16 Oct 2021 16:13:32 +0100
Subject: [PATCH] Make it possible to silence timestamp, process and thread
 info.

---
 log.cpp | 13 +++++++++----
 log.h   |  8 +++++++-
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/log.cpp b/log.cpp
index 5edad1d..629c071 100644
--- a/log.cpp
+++ b/log.cpp
@@ -160,14 +160,19 @@ namespace dechamps_cpplog {
 		thread.join();
 	}
 
-	Logger::Logger(LogSink* sink) {
+	Logger::Logger(LogSink* sink, const Options& options) {
 		if (sink == nullptr) return;
 
 		enabledState.emplace(*sink);
+		auto& stream = enabledState->stream;
 
-		FILETIME now = { 0 };
-		GetSystemTimeAsFileTimeFunction()(&now);
-		enabledState->stream << FormatFiletimeISO8601(now) << " " << GetCurrentProcessId() << " " << GetCurrentThreadId() << " ";
+		if (options.prependTime) {
+			FILETIME now = { 0 };
+			GetSystemTimeAsFileTimeFunction()(&now);
+			stream << FormatFiletimeISO8601(now) << " ";
+		}
+		if (options.prependProcessId) stream << GetCurrentProcessId() << " ";
+		if (options.prependThreadId) stream << GetCurrentThreadId() << " ";
 	}
 
 	Logger::~Logger() {
diff --git a/log.h b/log.h
index b75e39f..c43bd6a 100644
--- a/log.h
+++ b/log.h
@@ -81,7 +81,13 @@ namespace dechamps_cpplog {
 	class Logger final
 	{
 	public:
-		explicit Logger(LogSink* sink);
+		struct Options final {
+			bool prependTime = true;
+			bool prependProcessId = true;
+			bool prependThreadId = true;
+		};
+
+		explicit Logger(LogSink* sink, const Options& options = {});
 		~Logger();
 
 		template <typename T> friend Logger&& operator<<(Logger&& lhs, T&& rhs) {