Lua - Delete non-empty directory

问题

I'm trying to remove non-empty directory in Lua but without success,

I tried the following:

os.remove(path_to_dir)

And got the error: Directory not empty 39 When 39 is the number of files in path_to_dir

Also tried:

require ('lfs')
lfs.rmdir(path_to_dir)

And got the error: Directory not empty'

Worth to mention that I did chmod -R a+rX * to path_to_dir

Thanks for the help.

回答1:

You can either follow @EgorSkriptunoff's suggestion and use OS-specific commands to remove non-empty directories or get the list of files/sub-directories using lfs (for example, as described in this SO answer) and delete them one-by-one using os.remove.

回答2:

With path library you can do

function rmdir(p)
  path.each(path.join(p,"*"), function(P)
    path.remove(P)
  end,{
    param = "f";   -- request full path
    delay = true;   -- use snapshot of directory
    recurse = true; -- include subdirs
    reverse = true; -- subdirs at first 
  })
  path.remove(p)
end

回答3:

Depending on your os, you could just do this:

os.execute("rm --recursive " .. path_to_directory)

(this example is for linux)

回答4:

With lua lfs, you can implement a recursive function to do this.

local lfs = require('lfs')

local deletedir
deletedir = function(dir)
    for file in lfs.dir(dir) do
        local file_path = dir..'/'..file
        if file ~= "." and file ~= ".." then
            if lfs.attributes(file_path, 'mode') == 'file' then
                os.remove(file_path)
                print('remove file',file_path)
            elseif lfs.attributes(file_path, 'mode') == 'directory' then
                print('dir', file_path)
                deletedir(file_path)
            end
        end
    end
    lfs.rmdir(dir)
    print('remove dir',dir)
end


deletedir('tmp')

来源：https://stackoverflow.com/questions/37835565/lua-delete-non-empty-directory