Unable to get APIs to work

Lately I have been working on an OS for computercraft, and I plan to use a few 3rd party APIs in my OS. I am planning to use the ccConfig API and the md5 API (not made for computercraft, but it should work, right?). However, after loading the APIs (no error in the loading), it returns an error claiming that whatever line is calling the first function from either of the APIs is "Attempt to index ? (a nil value)". I have followed the documentation completely on ccConfig (as it's the one I need the most), but no matter how long I look at my own code, I cannot find anything that could be causing this error.

My code:

os.loadAPI ("/bin/APIs/ccConfig.lua")


local conf = ccConfig.new ("/System/Library/Config/UI.cfg", "Config for 'LionUI.lua'")
local deskBcol
local deskTcol
local wallpaper
local dockStyle
local falicon


local function loadConfig ()
    conf.load ()

    deskBcol = conf.getColor ("deskBcol", 8)
    deskTcol = conf.getColor ("deskTcol", 32768)
    wallpaper = conf.getString ("wallpaper", "/System/Library/Images/aqua.nfp")
    dockStyle = conf.getString ("dockStyle", "Saved")
    falicon = conf.getString ("falicon","&")
    
    conf.save ()
    
end

local function finderBar (state, arg1, arg2, arg3, arg4, arg5)
    if state == 0 then
        term.clear ()
        term.setCursorPos (1, 1)
        term.setBackgroundColor (1)
        term.clearLine ()
        
        term.setCursorPos (2, 1)
        term.setTextColor (2048)
        print (tostring (falicon))
        
        term.setCursorPos (5, 1)
        term.setTextColor (32768)
        print ("Finder")
        
        term.setCursorPos (13, 1)
        term.setTextColor (128)
        print ("File  Edit  View  Go  Help")
        
        term.setCursorPos (50, 1)
        term.setTextColor (2048)
        print ("?")
        
        elseif state == 1 then
            term.clear ()
            term.setCursorPos (1, 1)
            term.setBackgroundColor (1)
            term.clearLine ()
            
            term.setCursorPos (2, 1)
            term.setTextColor (2048)
            print ("@")
            
            term.setCursorPos (5, 1)
            term.setTextColor (32768)
            print (arg1)
            
            term.setCursorPos (string.len (arg1) + 7, 1)
            term.setTextColor (128)
            print (arg2)
            
            term.setCursorPos (string.len (arg1) + string.len (arg2) + 9, 1)
            term.setTextColor (128)
            print (arg3)
            
            term.setCursorPos (string.len (arg1) + string.len (arg2) + string.len (arg3) + 11, 1)
            term.setTextColor (128)
            print (arg4)
            
            term.setCursorPos (string.len (arg1) + string.len (arg2) + string.len (arg3) + string.len (arg4) + 13, 1)
            term.setTextColor (128)
            print (arg5)
            
            term.setCursorPos (50, 1)
            term.setTextColor (2048)
            print ("?")

    end

end

local function finderDock (style)
    local function loadIcons ()
        ico1 = paintutils.loadImage ("/System/Library/Icons/finder.nfp")
        ico2 = paintutils.loadImage ("/System/Library/Icons/dashboard.nfp")
        ico3 = paintutils.loadImage ("/System/Library/Icons/mail.nfp")
        ico4 = paintutils.loadImage ("/System/Library/Icons/images.nfp")
        ico5 = paintutils.loadImage ("/System/Library/Icons/terminal.nfp")
        ico6 = paintutils.loadImage ("/System/Library/Icons/preferences.nfp")
        ico7 = paintutils.loadImage ("/System/Library/Icons/place.nfp")
        ico8 = paintutils.loadImage ("/System/Library/Icons/place.nfp")
        ico9 = paintutils.loadImage ("/System/Library/Icons/place.nfp")
        ico10 = paintutils.loadImage ("/System/Library/Icons/place.nfp")

    end
    
    local function drawIcons ()
        paintutils.drawImage (ico1, 7, 17)
        paintutils.drawImage (ico2, 11, 17)
        paintutils.drawImage (ico3, 15, 17)
        paintutils.drawImage (ico4, 19, 17)
        paintutils.drawImage (ico5, 23, 17)
        paintutils.drawImage (ico6, 27, 17)
        paintutils.drawImage (ico7, 31, 17)
        paintutils.drawImage (ico8, 35, 17)
        paintutils.drawImage (ico9, 39, 17)
        paintutils.drawImage (ico10, 43, 17)

    end
    
    if style == "full" then
        term.setCursorPos (1, 16)
        term.setBackgroundColor (256)
        term.clearLine ()
        term.setCursorPos (1, 17)
        term.clearLine ()
        term.setCursorPos (1, 18)
        term.clearLine ()
        term.setCursorPos (1, 19)
        term.clearLine ()
        
        loadIcons ()
        drawIcons ()
        
        elseif style == "saved" then
            dock = paintutils.loadImage ("/System/Library/Images/dock-saved.nfp")
            paintutils.drawImage (dock, 6, 16)
            
            loadIcons ()
            drawIcons ()
        
    end

end

function initGUI (state)
    if state == 0 then
        finderBar (0)
        finderDock (dockStyle)
        
        else
            finderBar (1, "[NIL]", "WIP", "Sorry, not implemented yet", " ", " ")
            finderDock (dockStyle)        
        
    end

end

function finder ()
    initGUI (1)

end


finder ()

If you need anything else, please let me know.

ALSO: I am using CCEmuRedux, if that makes any difference.

Endergreen117, on 09 December 2014 - 12:39 AM said:

-snip

I believe your problem is that .lua extension on ccConfig. Because of this in order to use that api you need to use ccConfig.lua.function instead of just ccConfig.funciton. The .lua is part of the filename, so when referencing the file it must be included.

In that case, it would need to be accessed via _G["ccConfig.lua"].func(), so as to allow the period character to be interpreted correctly.

valithor, on 09 December 2014 - 12:59 AM said:

Endergreen117, on 09 December 2014 - 12:39 AM said:

-snip

I believe your problem is that .lua extension on ccConfig. Because of this in order to use that api you need to use ccConfig.lua.function instead of just ccConfig.funciton. The .lua is part of the filename, so when referencing the file it must be included.

Thank you for that, I knew it would be something stupid and obvious. I guess I just need to get moar coffee.

Lyqyd, on 09 December 2014 - 01:31 AM said:

In that case, it would need to be accessed via _G["ccConfig.lua"].func(), so as to allow the period character to be interpreted correctly.

Bearing in mind that the pointer can always be copied to a more suitable variable:

os.loadAPI ("/bin/APIs/ccConfig.lua")
ccConfig = _G["ccConfig.lua"]

local conf = ccConfig.new ("/System/Library/Config/UI.cfg", "Config for 'LionUI.lua'")

Personally I'd chop the "lua" extension off the original API file.