1 local LINUX = "linux" 2 local WIN = "win" 3 local platform = WIN 4  5 local need_the_filetype = function(tfiletype, filename) 6     for k, v in pairs(tfiletype) do 7         if (v == ".") or (v == ".*") then 8             return true 9         end10 11         local from, to = string.find(filename, "%" .. v)12         while from do13             local f, t = string.find(filename, "%" .. v, to)14             if not(f) then15                 break16             end17             from, to = f, t18         end19 20         if from and (to == string.len(filename)) then21             return true22         end23     end24     return false25 end26 27 local function scan_dir_file(path, tfiletype, tfilename)28     path = path or "./"29     tfiletype = tfiletype or {"."}30     tfilename = tfilename or {}31 32     local cmd = "ls " .. path33     if (platform == WIN) then34         cmd = ‘dir "‘ .. path .. ‘" /b‘35     end36     local popen = io.popen(cmd)37     if popen then38         for filename in popen:lines() do39             if (string.find(filename, "%.")) then40                 if need_the_filetype(tfiletype, filename) then41                     tfilename[#tfilename + 1] = {path = path, name = filename,}42                 end43             else44                 scan_dir_file(path .. filename .. "/", tfiletype, tfilename)45             end46         end47     end48     return tfilename49 end50 51 ---------------------------------52 -- interface53 --54 scan = {55     walk = function(path, tfiletype, tfilename)56         return scan_dir_file(path, tfiletype, tfilename)57     end,58 }59 60 --------------------------------61 -- test62 --63 local t = scan.walk()64 for k, v in pairs(t) do65     print(k, v.path, v.name)66 end