Read INI

function ReadIni(inputfile)
	local file = assert(io.open(inputfile, 'r'), 'Unable to open ' .. inputfile)
	local tbl, section = {}
	local num = 0
	for line in file:lines() do
		num = num + 1
		if not line:match('^%s-;') then
			local key, command = line:match('^([^=]+)=(.+)')
			if line:match('^%s-%[.+') then
				section = line:match('^%s-%[([^%]]+)'):lower()
				if not tbl[section] then tbl[section] = {} end
			elseif key and command and section then
				tbl[section][key:lower():match('^%s*(%S*)%s*$')] = command:match('^%s*(.-)%s*$')
			elseif #line > 0 and section and not key or command then
				print(num .. ': Invalid property or value.')
			end
		end
	end
	if not section then print('No sections found in ' .. inputfile) end
	file:close()
	return tbl
end