util.logger: New method 'add_simple_sink', logger.add_simple_sink(print) works

1 files changed, 11 insertions, 0 deletions

diff --git a/util/logger.lua b/util/logger.lua
index e72b29bc..ee257868 100644
--- a/util/logger.lua
+++ b/util/logger.lua
@@ -67,10 +67,21 @@ local function add_level_sink(level, sink_function)
 	end
 end
 
+local function add_simple_sink(simple_sink_function, levels)
+	local format = require "util.format".format;
+	local function sink_function(name, level, msg, ...)
+		return simple_sink_function(name, level, format(msg, ...));
+	end
+	for _, level in ipairs(levels or {"debug", "info", "warn", "error"}) do
+		add_level_sink(level, sink_function);
+	end
+end
+
 return {
 	init = init;
 	make_logger = make_logger;
 	reset = reset;
 	add_level_sink = add_level_sink;
+	add_simple_sink = add_simple_sink;
 	new = make_logger;
 };