VLC plugin - delete currently playing file

gistfile1.txt

--[[
INSTALLATION (create directories if they don't exist):
- put the file in the VLC subdir /lua/extensions, by default:
* Linux (all users): /usr/share/vlc/lua/extensions/
* Linux (current user): ~/.local/share/vlc/lua/extensions/
* Mac OS X (all users): /Applications/VLC.app/Contents/MacOS/share/lua/extensions/
* Windows: not supported - getting permission error on delete...
- Restart VLC.
]]--

--[[ Extension description ]]
function descriptor()
  return {
    title = "Diskdelete" ;
    version = "0.1" ;
    author = "Ingo Fischer (Inspired by solution of Mark Morschhäuser)" ;
    shortdesc = "Delete currently playing file from disk";
    description = "<h1>Delete current file</h1>"
    .. "When you're playing a file, use Diskdelete to "
    .. "easily delete this file <b>from your disk</b> with one click."
    .. "<br>This will NOT change your playlist, it will <b>ERASE the file</b> itself!"
    .. "<br>It will not use the Recycle Bin, the file will be gone immediately!"
    .. "<br>This extension has been tested on GNU Linux with VLC 2.0.3."
    .. "<br>The author is not responsible for damage caused by this extension.";
  }
end

function split(s, delimiter)
    result = {};
    for match in (s..delimiter):gmatch("(.-)"..delimiter) do
        table.insert(result, match);
    end
    return result;
end

-- Activate on Ctrl+Alt+D
function key_press( var, old, new, data )
  local key = new
  CTRL_ALT_D = 83886180 
  if key == CTRL_ALT_D then
    delete()
  end
end


--[[ Hooks ]]
-- Activation hook
function activate()
  vlc.var.add_callback( vlc.object.libvlc(), "key-pressed", key_press )
end

-- Deactivation hook
function deactivate()
  vlc.msg.dbg("[Diskdelete] Deactivated")
  vlc.deactivate()
end

function close()
  deactivate()
end

--[[ The file deletion routine ]]
function delete()
  item = vlc.input.item() -- get the current playing file
  uri = item:uri() -- extract it's URI
  filename = vlc.strings.decode_uri(uri) -- decode %foo stuff from the URI
  
  --vlc.msg.info(item)
  for key,value in pairs(item:info()) do
      print("found member " .. key);
  end

  filename = split(filename, "file://")[2]

  vlc.msg.info("Deleting file: " .. filename)

  retval, err = os.remove(filename) -- delete the file with this filename from disk
  if(retval == nil) -- error handling; if deletion failed, print why
  then
    vlc.msg.info("[Diskdelete] error: " .. err)
    d = vlc.dialog("Error deleting file")
    d:add_label(err)
    d:show()
  else
    vlc.playlist.skip(1)
  end
end

function meta_changed()
end

That didn't work on OSX so I modified it to this: https://gist.github.com/e-desouza/9c340a5373492befb1203428e458bbf5