+-- Prosody IM
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
-local format = string.format;
-local print = print;
-local debug = debug;
-local tostring = tostring;
+local pcall = pcall;
-local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
-local do_pretty_printing = not os.getenv("WINDIR");
+local config = require "core.configmanager";
+local log_sources = config.get("*", "core", "log_sources");
+
+local find = string.find;
+local ipairs, pairs, setmetatable = ipairs, pairs, setmetatable;
module "logger"
-local logstyles = {};
+local name_sinks, level_sinks = {}, {};
+local name_patterns = {};
---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
+-- Weak-keyed so that loggers are collected
+local modify_hooks = setmetatable({}, { __mode = "k" });
+
+local make_logger;
+local outfunction = nil;
function init(name)
+ if log_sources then
+ local log_this = false;
+ for _, source in ipairs(log_sources) do
+ if find(name, source) then
+ log_this = true;
+ break;
+ end
+ end
+
+ if not log_this then return function () end end
+ end
+
+ local log_debug = make_logger(name, "debug");
+ local log_info = make_logger(name, "info");
+ local log_warn = make_logger(name, "warn");
+ local log_error = make_logger(name, "error");
+
--name = nil; -- While this line is not commented, will automatically fill in file/line number info
- return function (level, message, ...)
- if not name then
- local inf = debug.getinfo(3, 'Snl');
- level = level .. ","..tostring(inf.short_src):match("[^/]*$")..":"..inf.currentline;
- end
- if ... then
- print(name, getstring(logstyles[level], level), format(message, ...));
- else
- print(name, getstring(logstyles[level], level), message);
+ local namelen = #name;
+ return function (level, message, ...)
+ if outfunction then return outfunction(name, level, message, ...); end
+
+ if level == "debug" then
+ return log_debug(message, ...);
+ elseif level == "info" then
+ return log_info(message, ...);
+ elseif level == "warn" then
+ return log_warn(message, ...);
+ elseif level == "error" then
+ return log_error(message, ...);
+ end
+ end
+end
+
+function make_logger(source_name, level)
+ local level_handlers = level_sinks[level];
+ if not level_handlers then
+ level_handlers = {};
+ level_sinks[level] = level_handlers;
+ end
+
+ local source_handlers = name_sinks[source_name];
+
+ -- All your premature optimisation is belong to me!
+ local num_level_handlers, num_source_handlers = #level_handlers, source_handlers and #source_handlers;
+
+ local logger = function (message, ...)
+ if source_handlers then
+ for i = 1,num_source_handlers do
+ if source_handlers[i](source_name, level, message, ...) == false then
+ return;
end
end
+ end
+
+ for i = 1,num_level_handlers do
+ level_handlers[i](source_name, level, message, ...);
+ end
+ end
+
+ -- To make sure our cached lengths stay in sync with reality
+ modify_hooks[logger] = function () num_level_handlers, num_source_handlers = #level_handlers, source_handlers and #source_handlers; end;
+
+ return logger;
+end
+
+function setwriter(f)
+ local old_func = outfunction;
+ if not f then outfunction = nil; return true, old_func; end
+ local ok, ret = pcall(f, "logger", "info", "Switched logging output successfully");
+ if ok then
+ outfunction = f;
+ ret = old_func;
+ end
+ return ok, ret;
+end
+
+function add_level_sink(level, sink_function)
+ if not level_sinks[level] then
+ level_sinks[level] = { sink_function };
+ else
+ level_sinks[level][#level_sinks[level] + 1 ] = sink_function;
+ end
+
+ for _, modify_hook in pairs(modify_hooks) do
+ modify_hook();
+ end
end
-return _M;
\ No newline at end of file
+function add_name_sink(name, sink_function, exclusive)
+ if not name_sinks[name] then
+ name_sinks[name] = { sink_function };
+ else
+ name_sinks[name][#name_sinks[name] + 1] = sink_function;
+ end
+
+ for _, modify_hook in pairs(modify_hooks) do
+ modify_hook();
+ end
+end
+
+function add_name_pattern_sink(name_pattern, sink_function, exclusive)
+ if not name_patterns[name_pattern] then
+ name_patterns[name_pattern] = { sink_function };
+ else
+ name_patterns[name_pattern][#name_patterns[name_pattern] + 1] = sink_function;
+ end
+end
+
+_M.new = make_logger;
+
+return _M;