Write and Load a file?

Hello,

I am trying to make some variables save-able and load-able from a file, but Im not sure how?

os.loadAPI(fileLocation)

then filename.variable

Does that help?

File 1 named config (Variable File)

someVar = "Some String"
-- DO NOT USE local. It needs to be GLOBAL

File 2 named startup (Reading File)

os.load("config")
print(config.someVar) -- Prints "Some String"

Linearus, on 04 April 2013 - 09:09 PM said:

os.loadAPI(fileLocation)

then filename.variable

Does that help?

Linearus, on 04 April 2013 - 09:11 PM said:

File 1 named config (Variable File)

someVar = "Some String"
-- DO NOT USE local. It needs to be GLOBAL

File 2 named startup (Reading File)

os.load("config")
print(config.someVar) -- Prints "Some String"

For that your variables must be global, like you've said.

I suggest doing this:

-- Writing to a file
local handle = fs.open("path/to/file", "w")
handle.write(textutils.serialize(varName)
handle.close()
 
-- Reading
local handle = fs.open("path/to/file", "r")
local reader = handle.readAll()
handle.close()
local var = textutils.unserialize(reader)

:)/>

Engineer, on 04 April 2013 - 09:18 PM said:

-snip-

Yeah, serializing a table (yes, what Engineer's said actually does just that) and saving it is a bit more efficient than loading an API. APIs sometimes have fields, like CHANNEL_BROADCAST in rednet (1.4 or above), but that's not the point of an API - I mean, a bunch of variables is not exactly an Advanced Programming Interface, is it? (Okay, colors API maybe, but that's still not a config file).

What I want to say is that loading a config file by executing it is just not the sensible way to do it.


About Engineer's solution, here's the explanation...

Thanks all, this will (hopefully) work!