15 replies to this topic

[popdog15]

I'm making a security system, and I have a file with the 'admins' of it. I need a way for the program to check the admin file if the person using the player detector is indeed an admin. I've heard I can use string.sub() to do this, but I'm unaware of the syntax and really how it works.

[PixelToast]

if you have a file like this for example:

Mk352:banned
Cloudy:admin
PixelToast:awesome

you could use this to get the user's rank:
rank=line:match(".*"..user..":([^\n]+).")

basically it looks to see if there is something after user..":"
(.+) will output anything, as long as the user exists
more info on patterns here

[popdog15]

PixelToast, on 22 August 2013 - 10:05 PM, said:

if you have a file like this for example:

Mk352:banned
Cloudy:admin
PixelToast:awesome

you could use this to get the user's rank:
rank=line:match("."..user.."[^\n]+).")

basically it looks to see if there is something after user..":"
(.+) will output anything, as long as the user exists
more info on patterns here

Though, that would just output it, right? I'm looking to check, rather than output.

[PixelToast]

isAdmin=line:match(".*"..user.." :([^\n]+).")=="admin"
or if you just have a normal list with just names
isAdmin=line:match(".*("..user..")\n*")~=nil

[popdog15]

PixelToast, on 22 August 2013 - 10:25 PM, said:

isAdmin=line:match(".*"..user.." [^\n]+).")=="admin"
or if you just have a normal list with just names
isAdmin=line:match(".*("..user..")\n*")~=nil

Hate to bother you, but I'm still confused. I need to check this from another program; not the file with the 'admin list' in it.

[PixelToast]

local file=fs.open("admins","r")
local admins=file.readAll()
file.close()
while true do
  e,p=os.pullEvent("player")
  if admins:match(".*("..p..")\n*") then
   -- do stuff
  end
end

EDIT: fixed, sorry it was 2 AM

[Goof]

EDIT: *got ninja'ed by PixelToast*

[jay5476]

uhhh pixel don't you need to specify a mode eg.("r","w","a") so I believe it should be

 fs.open("admins", "r") 

[H4X0RZ]

jay5476, on 23 August 2013 - 01:47 AM, said:

uhhh pixel don't you need to specify a mode eg.("r","w","a") so I believe it should be

 fs.open("admins", "r") 

If you don't specify a mode, it's automaticaly set to read.

[theoriginalbit]

Freack100, on 23 August 2013 - 10:44 AM, said:

If you don't specify a mode, it's automaticaly set to read.

Incorrect... you would get the following error

Quote

<filename>:<line number>: Expected string, string

[H4X0RZ]

theoriginalbit, on 23 August 2013 - 11:00 AM, said:

Freack100, on 23 August 2013 - 10:44 AM, said:

If you don't specify a mode, it's automaticaly set to read.

Incorrect... you would get the following error

Quote

<filename>:<line number>: Expected string, string

okay, (I've checked the APIs) It's a feature of the IO API, the FS API don't provides this feature... right?

[PixelToast]

Freack100, on 23 August 2013 - 12:12 PM, said:

okay, (I've checked the APIs) It's a feature of the IO API, the FS API don't provides this feature... right?

yes

function open( _sPath, _sMode )
local sMode = _sMode or "r"

/me thinks of using the io api again

[theoriginalbit]

Freack100, on 23 August 2013 - 12:12 PM, said:

okay, (I've checked the APIs) It's a feature of the IO API, the FS API don't provides this feature... right?

Correct... If you do this code:

local h = io.open("test")
for k,v in pairs(h) do
  print(k," = ",v)
end
h:close()

it will work... this won't work...

local h = fs.open("test")
for k,v in pairs(h) do
  print(k," = ",v)
end
h.close()

[Zudo]

Why not use have a table which has textutils.serialize applied to it and saved in a file?

[PixelToast]

ZudoHackz, on 23 August 2013 - 01:27 PM, said:

Why not use have a table which has textutils.serialize applied to it and saved in a file?

this is easier, he can edit the file directly instead of using textutils.serialize

[Cranium]

I'd highly recommend the Lua User's Wiki rather than the lua documentation. It reads much easier in my opinion.