CC Conveyor

-- Conveyor
-- by SukaiPoppuGo
-- require mod Plethora
-- Usage:
-- Conveyor <from:string> <to:string>
--
-- Ex:
-- Conveyor south north

local from, to = ...
local delay = 20

os.setComputerLabel("Conveyor")

local inv = {}

local function hasMethod(name,method)
    for _,m in pairs(peripheral.getMethods(name)) do
        if m == method then
            return true
        end
    end
    return false
end

for _,name in pairs(peripheral.getNames()) do
    if hasMethod(name, "pushItems") then
        table.insert(inv, peripheral.wrap(name))
    end
end

local function suck(container)
    local slot = 1
    while true do
        print(string.format("Suck slot %s from %s", slot, from))
        if not pcall(container.pullItems, from, slot) then
            return
        end
        slot = slot+1
    end
end

local function dump(container)
    for slot, item in pairs(container.list()) do
        print(string.format("Dump slot %s to %s", slot, to))
        if not container.pushItems(to, slot) then
            print(string.format("Fail to dump slot %s to %s", slot, to))
            return
        end
    end
end

while true do
    for _, container in pairs(inv) do
        dump(container)
        sleep()
        suck(container)
        sleep()
        dump(container)
        sleep()
    end
    print("pause")
    sleep(delay)
end