lua遍历文件夹

require"lfs"
function findindir (path,wefind,r_table,intofolder)
    for file in lfs.dir(path) do
        if file ~= "." and file ~= ".." then
            local f = path..''..file
            --print ("/t "..f)
            if string.find(f,wefind) ~= nil then
                --print("/t "..f)
                table.insert(r_table,f)
            end
            local attr = lfs.attributes (f)
            assert (type(attr) == "table")
            if attr.mode == "directory" and intofolder then
                findindir (f,intofolder)
            else
                --for name,value in pairs(attr) do
                --    print (name,value)
                --end
            end
        end
    end
end
local currentFolder = [[C:]]
-------------------------------------
local input_table = {}
findindir(currentFolder,"%.txt",input_table,false)--查找txt文件
i=1
while input_table[i]~=nil do
print(input_table[i])
i=i+1
end