LUA Help (reading from/writing to files)

[tagala]

Is it possible to read from or write to a text file in LUA for private servers? if so, could i get an example?

for example, i click on a gameobject and it opens up a gossipscript and i click something on it, and it makes a file called click.txt which says "tagal clicked a button!"

[stoneharry]

EvilMana.com - PSP Lua Tutorials - Reading And Writing Files

Google's your best friend. I know this is for a psp, but it can easily be applied to WoW.
Here is an example, a npc that saves to a text file what you write:

local current_comment = ""

function Comment_Gossip(unit, event, player)
unit:GossipCreateMenu(710, player, 0)
unit:GossipMenuAddItem(0, "I would like to type something.", 1, 1)
unit:GossipMenuAddItem(0, "Nevermind.", 2, 0)
unit:GossipSendMenu(player)
end

function Comment_Select(unit, event, player, id, intid, Code)
if Code ~= nil then
comment(Code, Code)
end
    if (intid == 2) then
    player:GossipComplete()
    end
end


function comment(codeid, txt)
if txt == nil then
return
end
    if codeid == nil then
    return
    end
        local f = assert(io.open("server_comments.txt", "w"))
        current_comment = ""..current_comment.."\n\n"..codeid..""
        f:write(current_comment)
        f:close()
end

RegisterUnitGossipEvent(55555, 1, "Comment_Gossip")
RegisterUnitGossipEvent(55555, 2, "Comment_Select")

[AngelSandy]

Could you explain that script a bit more in detail?
It would be an interesting approach for bug reports on servers, so that people don't always have to post it on the forums. Unless the .txt file cannot be saved on the FTP server.