core.loggingmanager: A new manager (yay!) to manage log output

1 files changed, 49 insertions, 0 deletions

diff --git a/core/loggingmanager.lua b/core/loggingmanager.lua
new file mode 100644
index 00000000..973edbf4
--- /dev/null
+++ b/core/loggingmanager.lua
@@ -0,0 +1,49 @@
+
+local format, rep = string.format, string.rep;
+local io_write = io.write;
+local pcall = pcall;
+local debug = debug;
+local tostring = tostring;
+local math_max = math.max;
+
+local logger = require "util.logger";
+
+-- Global log function, because some people are too 
+-- lazy to get their own
+_G.log = logger.init("general");
+
+-- Disable log output, needs to read from config
+-- logger.setwriter(function () end);
+
+local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
+local do_pretty_printing = not os.getenv("WINDIR");
+
+local logstyles = {};
+
+--TODO: This should be done in config, but we don't have proper config yet
+if do_pretty_printing then
+	logstyles["info"] = getstyle("bold");
+	logstyles["warn"] = getstyle("bold", "yellow");
+	logstyles["error"] = getstyle("bold", "red");
+end
+
+local sourcewidth = 20;
+local math_max, rep = math.max, string.rep;
+local function make_default_log_sink(level)
+	return function (name, _level, message, ...)
+		sourcewidth = math_max(#name+2, sourcewidth);
+		local namelen = #name;
+		if ... then 
+			io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n");
+		else
+			io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n");
+		end
+	end
+end
+
+-- Set default sinks
+logger.add_level_sink("debug", make_default_log_sink("debug"));
+logger.add_level_sink("info", make_default_log_sink("info"));
+logger.add_level_sink("warn", make_default_log_sink("warn"));
+logger.add_level_sink("error", make_default_log_sink("error"));
+