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Englisch loadstring error

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alt loadstring error

Gajos
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I don't know how to add more arguments to loadstring! (line: 14)
I have an errors.
Lua compiler: here
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_load = {}

function addhook(name,func)
	if name == 'load' then
		table.insert(_load,func)
	end
end

function inithook(name,...)
	t = {...}
	if name == 'load' then
		if _load[1] then
			for _, i in pairs(_load) do
				local f = loadstring(i..'('..table.concat(t,',')..')')
				f()
			end
		end
	end
end

addhook('load','onload')
function onload(id,l)
	print(id..': '..l)
end

function start()
	local id = 1
	inithook('load',id,'lol')
end

start()

alt Re: loadstring error

DannyDeth
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What are you trying to accomplish with this script? I had similiar troubles with loadstring before, but never figured out what was wrong. If I knew what you are trying to do, I might be able to find an alternative method for solving your problem.

EDIT: If you print the table.concat of t, you will see "1,lol". Loadstring will try to pass the variable lol, not the string 'lol' to the function. This is where you are getting the nil value stuff.

I rewrote the code to convert every argument to a string value before passing it to the function, if you use this code you must tonumber any variables that need to have arithmetic performed on them.
Code >
1× editiert, zuletzt 27.12.13 00:50:13

alt Re: loadstring error

DannyDeth
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I'm not thick, dude, I was asking what the script is supposed to do, not how it works. I can explain in detail how an IRC server works, but if I did not tell you it was an IRC server you wouldn't know what the hell I was talking about, would you?

alt Re: loadstring error

Flacko
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Why don't you tell us what the error is.
Also, why don't you just do sth like this
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_G[i](...)
using loadstring is bad

alt Re: loadstring error

Avo
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Don´t ask for help then. I can´t see any sensible reason why we don´t have to know this. Why aye man?

alt Re: loadstring error

Avo
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>my
>us
pls

---

Don't waste our time. If you want to add a possibility to run lua code in-game(sounds like a server hack), you should to get rid of this on your own. I would help you if you gave here information about your aim.

alt Re: loadstring error

Gajos
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lol
I'm want use this for eg. Visual Lua like:
lib.addhook('buttonhover','wtf')

alt Re: loadstring error

DannyDeth
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Okay, time for a little lesson in the architecture of Lua then.

In Lua, *everything* is a table. The global table contains all variables & functions declared in a non-local scope. So these code examples are identical to Lua:
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myFunction(1,2,3)
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_G["myFunction"](1,2,3)

So, naturally, if you know the name of the function that needs to be executed ( which is of course stored in the table _load in your code ), you can execute the function using the global table. The arguments can be expanded from a table using unpack(), so your inithook code would be something like this:

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function inithook(name,...)
     t = {...}
     if name == 'load' -- btw, why is this here?
          if _load[1] then -- and this?
               for _, i in pairs(_load) do
                    _G[i](unpack(t))
               end
          end
     end
end

NOTE: I didn't test this.

alt Re: loadstring error

Gajos
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I don't know how I can make this like you for eg. 2 hooks.
Create hook load and save for functions onload() and onsave()

alt Re: loadstring error

Gajos
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Thanks all. Pls help:

error line: 15
input:15: attempt to index field '?' (a nil value)
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hookG = {}

function addhook(name,func)
	local t = {
		name = name;
		func = func;
	}
	table.insert(hookG,t)
end

function inithook(name,...)
	local t = {...}
	for _, i in pairs(hookG) do
		if i.name == name then
			_G[_].func(unpack(t))
		end
	end
end

-- test
addhook('load','onload')
function onload(id,l)
	print(id..': '..l)
end

function start()
	local id = 1
	inithook('load',id,'lol')
end

start()
3× editiert, zuletzt 28.12.13 07:27:56

alt Re: loadstring error

Flacko
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local hookt = {} --hook table

function addhook(hookname, funcname)
	hookt[hookname] = hookt[hookname] or {}
	table.insert(hookt[hookname], funcname)
end

function callhook(hookname, ...)
	if hookt[hookname] then
		for k, funcname in pairs(hookt[hookname]) do
			_G[funcname](...)
		end
	end
end

--test
addhook('load', 'onload')
function onload(...)
	for k, v in pairs({...}) do
		print(v)
	end
end

callhook('load', 'hello', 'world')
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