Now Playing Text plugin for VLC

-- Extension description
function descriptor()
 return { title = "Now Playing Text File" ;
  version = "1.0" ;
  author = "TheFuzzy" ;
  shortdesc = "Outputs song to text file";
  description = "Outputs the title of the currently playing song to a text file." ;
  capabilities = { "input-listener" }
 }
end
pathdialog=0
function activate()
   vlc.msg.dbg("[now playing text] Welcome")
   --vlc.msg.dbg("[now playing text] Files will be stored in")
   --vlc.msg.dbg(vlc.config.userdatadir())

   titlefile=vlc.config.userdatadir().."/np_title.txt"
   artistfile=vlc.config.userdatadir().."/np_artist.txt"
   -- ensure files are created
   pcall(dofile,titlefile)
   pcall(dofile,artistfile)
   pathdialog = vlc.dialog( "Now Playing Text" )
   pathdialog:add_label( "Your text files will be located here:" )
   pathdialog:add_text_input( vlc.config.userdatadir(), 1, 3, 4, 1)
   pathdialog:add_button( "_Ok", hide_dialog )

   local input = vlc.object.input()
   if input then input_changed() end
end
function meta_changed()
end
function deactivate()
 vlc.msg.dbg("[now playing text] deact")
 pathdialog:delete()
end

function save_title()
-- save title
 local item=vlc.item or vlc.input.item()
 io.output(titlefile)
 io.write(item:metas()["title"])
 io.close()
end
function save_artist()
-- save artist
 local item=vlc.item or vlc.input.item()
 io.output(artistfile)
 io.write(item:metas()["artist"])
 io.close()
end


function input_changed()
 vlc.msg.dbg("[now playing text] input changed..!")
 local item=vlc.item or vlc.input.item()
 if item then
  save_title()
  save_artist()
 end
 return false
end

function hide_dialog()
 pathdialog:hide()
end