A simple tool for logging and eventually debugging errors in hooks

hook-debug.lua

require 'hook' -- make sure it's loaded

local function stringifyArgs(...)
	local limit = select('#', ...)
	local function stringifyHelper(n, a, ...)
		if n > limit then return end
		local t = type(a)
		if t == 'player' then
			return '('..n..') ' .. a:Name() .. "(" .. a:SteamID() .. ")", stringifyHelper(n + 1, ...)
		elseif t == 'number' or t == 'string' then
			return '('..n..') ' .. tostring(a), stringifyHelper(n + 1, ...)
		else
			return '('..n..') ' .. t, stringifyHelper(n + 1, ...)
		end
	end
	return table.concat({stringifyHelper(1, ...)}, ', ')
end

local hook_Call = hook.Call

hook.Call = function(hook, ...)
	local succ, a, b, c, d, e, f = pcall(hook_Call, hook, ...)

	if succ then
		-- it was successful. return.
		return a, b, c, d, e, f
	else
		-- pass along the error
		local TimeStr = os.date( "%X - %d/%m/%Y" , os.time() )
		local message = TimeStr .. ' - hook: ' .. tostring(hook) .. ' error: ' .. a .. '\n\tARGUMENTS: ' .. stringifyArgs(...) .. '\n\n'
		file.Append('hookErrors.txt', message)

		error(a)
	end
end