Hopper

--Program made by Warfar
--http://pastebin.com/u/warfar


if not turtle then
    print("Turtles only")
    return
end
local function printusage()
    print("Usage: hopper <side> <usage>")
    print("Valid sides are: top, bottom or front")
    print("Valid usages are: suck or drop")
end
local tArgs = { ... }
if #tArgs ~= 2 then
    printusage()
    return
end
if tArgs[1] ~= "top" and tArgs[1] ~= "bottom" and tArgs[1] ~= "front" then
    printusage()
    return
end
if tArgs[2] ~= "suck" and tArgs[2] ~= "drop" then
    printusage()
    return
end
if tArgs[2] == "drop" then
    if tArgs[1] == "top" then
        while true do
            for i = 1,16 do
                turtle.select(i)
                turtle.dropUp()
            end
        end
    elseif tArgs[1] == "bottom" then
        while true do
            for i = 1,16 do
                turtle.select(i)
                turtle.dropDown()
            end
        end
    elseif tArgs[1] == "front" then
        while true do
            for i = 1,16 do
                turtle.select(i)
                turtle.drop()
            end
        end
    end
else
    if tArgs[1] == "top" then
        while true do
            turtle.suckUp()
        end
    elseif tArgs[1] == "bottom" then
        while true do
            turtle.suckDown()
        end
    elseif tArgs[1] == "front" then
        while true do
            turtle.suck()
        end
    end
end