返回指定文件的大小,如果失败返回 false 123456789101112131415-- @function [parent=#io] filesize-- @param string path 文件完全路径-- @return integer#integerfunction io.filesize(path) local size = false local file = io.open(path, "r") if file then local current = file:seek() size = file:seek("end") file:seek("set", current) io.close(file) end return sizeend