CC: Startup program, executes folders

--[[--
    This program runs everything
    in the folder /autorun/ once
    and everything within the folder
    /loop/ continously
--]]--

-- folder path
local runpath = "autorun"
local looppath = "loop"

-- if the delay between each
-- run is less than this, cancel out
-- dont touch if you dont
-- know what youre doing
local throttle = 5

--(( Functions ))--

local function checkfolder(path)
    if fs.isDir(path) then
        -- not empty
        return #fs.list(path) > 0
    else
        if fs.exists(path) then
            -- path is a file, not folder
            error("'"..path.."' is not a folder!",0)
        else
            -- no file nor folder
            return false
        end
    end
end

local function executefolder(folder)
    local list = fs.list(folder)
    for index,name in ipairs(list) do
        local path = fs.combine(folder,name)
        if fs.isDir(path) then
            executefolder(path)
        else
            shell.run(path)
        end
    end
end

local function oldStartupScript()
    local label = os.getComputerLabel()
    local info = function(key,value)
        term.setTextColor(colors.lightGray)
        write(key)
        if term.isColor and term.isColor() then
            term.setTextColor(colors.yellow)
        else
            term.setTextColor(colors.white)
        end
        print(value)
    end

    info("Computer ID: ","#"..os.getComputerID())
    info("Computer label: ", os.getComputerLabel() or "<unnamed>")
    if turtle then
        local fuel = turtle.getFuelLevel()
        local limit = math.floor(100 * fuel / turtle.getFuelLimit()) .. "%"
        info("Fuel level: ", fuel.." ("..limit..")")
    end
end

--(( Error handleing ))--

--(( Main program ))--

oldStartupScript()

if checkfolder(runpath) then
    executefolder(runpath)
end

while true and checkfolder(looppath) do
    local starttime = os.clock()
    executefolder(looppath)
    local endtime = os.clock()

    if endtime - starttime < throttle then
        error("Stopping loop in case of continous erroring",0)
    end
end

--(( EOF ))--