Add red color to stderr logging

libs/log/include/psemek/log/colored_stream.hpp

@@ -0,0 +1,10 @@
+#pragma once
+
+#include <psemek/io/stream.hpp>
+
+namespace psemek::log
+{
+
+	std::unique_ptr<io::ostream> colored_stream(std::unique_ptr<io::ostream> stream, std::string open, std::string close);
+
+}

libs/log/source/colored_stream.cpp

@@ -0,0 +1,45 @@
+#include <psemek/log/colored_stream.hpp>
+
+namespace psemek::log
+{
+
+	namespace
+	{
+
+		struct colored_stream_impl
+			: io::ostream
+		{
+			colored_stream_impl(std::unique_ptr<io::ostream> stream, std::string open, std::string close)
+				: stream_(std::move(stream))
+				, open_(std::move(open))
+				, close_(std::move(close))
+			{}
+
+			std::size_t write(char const * p, std::size_t size) override
+			{
+				std::size_t result = 0;
+				stream_->write(open_.data(), open_.size());
+				result += stream_->write(p, size);
+				stream_->write(close_.data(), close_.size());
+				return result;
+			}
+
+			void flush() override
+			{
+				stream_->flush();
+			}
+
+		private:
+			std::unique_ptr<io::ostream> stream_;
+			std::string open_;
+			std::string close_;
+		};
+
+	}
+
+	std::unique_ptr<io::ostream> colored_stream(std::unique_ptr<io::ostream> stream, std::string open, std::string close)
+	{
+		return std::make_unique<colored_stream_impl>(std::move(stream), std::move(open), std::move(close));
+	}
+
+}

libs/sdl2/source/main.cpp

@@ -6,8 +6,10 @@
 #include <psemek/util/clock.hpp>
 #include <psemek/util/pretty_print.hpp>
 #include <psemek/log/log.hpp>
+#include <psemek/log/colored_stream.hpp>
 #include <psemek/io/synchronized.hpp>
 #include <psemek/util/exception.hpp>
+#include <psemek/util/terminal_color.hpp>
 
 #undef main
 
@@ -28,6 +30,9 @@ int main(int argc, char ** argv) try
 	synchronized_stdout_stderr.push_back(io::std_err());
 	synchronized_stdout_stderr = io::synchronized(std::move(synchronized_stdout_stderr));
 
+	if (util::terminal_color::supported())
+		synchronized_stdout_stderr[1] = log::colored_stream(std::move(synchronized_stdout_stderr[1]), std::string{util::terminal_color::red()}, std::string{util::terminal_color::normal()});
+
 	log::add_sink(log::default_sink(std::move(synchronized_stdout_stderr[0]), stdio_log_level, log::level::info));
 	log::add_sink(log::default_sink(std::move(synchronized_stdout_stderr[1]), log::level::warning, log::level::error));
 	log::register_thread("main");

libs/util/include/psemek/util/terminal_color.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <string_view>
+
+namespace psemek::util::terminal_color
+{
+
+	bool supported();
+	std::string_view bold();
+	std::string_view red();
+	std::string_view green();
+	std::string_view yellow();
+	std::string_view cyan();
+	std::string_view normal();
+
+}

libs/util/source/terminal_color.cpp

@@ -0,0 +1,47 @@
+#include <psemek/util/terminal_color.hpp>
+
+#include <cstdlib>
+
+namespace psemek::util::terminal_color
+{
+
+	bool supported()
+	{
+		std::string_view term;
+		if (auto t = std::getenv("TERM"))
+			term = t;
+
+		return term == "linux" || term.starts_with("xterm");
+	}
+
+	std::string_view bold()
+	{
+		return "\033[1m";
+	}
+
+	std::string_view red()
+	{
+		return "\033[1;31m";
+	}
+
+	std::string_view green()
+	{
+		return "\033[1;32m";
+	}
+
+	std::string_view yellow()
+	{
+		return "\033[33m";
+	}
+
+	std::string_view cyan()
+	{
+		return "\033[36m";
+	}
+
+	std::string_view normal()
+	{
+		return "\033[0m";
+	}
+
+}

tools/test/source/main.cpp

@@ -1,6 +1,7 @@
 #include <psemek/test/test.hpp>
 #include <psemek/util/pretty_print.hpp>
 #include <psemek/util/exception.hpp>
+#include <psemek/util/terminal_color.hpp>
 #include <psemek/log/log.hpp>
 
 #include <map>
@@ -63,15 +64,6 @@ namespace psemek::test
 
 }
 
-static bool terminal_has_color()
-{
-	std::string_view term;
-	if (auto t = std::getenv("TERM"))
-		term = t;
-
-	return term == "linux" || term.starts_with("xterm");
-}
-
 int main(int argc, char ** argv)
 {
 	std::string_view bold;
@@ -81,14 +73,14 @@ int main(int argc, char ** argv)
 	std::string_view cyan;
 	std::string_view normal;
 
-	if (terminal_has_color())
+	if (psemek::util::terminal_color::supported())
 	{
-		bold = "\033[1m";
-		red = "\033[1;31m";
-		green = "\033[1;32m";
-		yellow = "\033[33m";
-		cyan = "\033[36m";
-		normal = "\033[0m";
+		bold = psemek::util::terminal_color::bold();
+		red = psemek::util::terminal_color::red();
+		green = psemek::util::terminal_color::green();
+		yellow = psemek::util::terminal_color::yellow();
+		cyan = psemek::util::terminal_color::cyan();
+		normal = psemek::util::terminal_color::normal();
 	}
 
 	std::set<std::string> tests;