Turtlescript Dump Command

--[[
======================= A KreezCo Production =============================
==  Written by: Kreezxil                                                ==
==  Orignal Code by: M_I_Z_E                                            ==
==  Many Parts of this code was barrowed from the original turtle       ==
==    programs that come with computer craft.                           ==
==    http://www.computercraft.info/                                    ==
==  YouTube channel Name: Adventures in Casual Gaming                   ==
==  URL: http://www.youtube.com/user/kreezxil                           ==
==  Original URL: http://www.youtube.com/user/MIZ3craft                 ==
==  Please link to my channel and give proper credit if using my code.  ==
==  Thanks for watching!                                                ==
==  Created 6/25/2014                                                   ==
==========================================================================
--]]

--[[ Begin Library
     Libary by Kreezxil 7/29/2013
--]]


function dump(direction, slot)
    if slot == "all" then
        for i=1,16 do
            turtle.select(i)
            turtle.drop()
        end
        return
    end

    turtle.select(slot)
    if direction == "f" then
        turtle.drop()
    elseif direction == "u" then
        turtle.dropUp()
    elseif direction == "d" then
        turtle.dropDown()
    end
end

--[[ End Library --]]

local tArgs = { ... }
--[[ test how many args were passed, if none set dist to 0 and assume
forward facing. --]]
if #tArgs < 2 then
    --[[ print usage --]]
    print("Usage: dump <dir> <slot>")
    print()
    return
end

if string.find("fdu",tArgs[1]) ~= nil then
    direction = tArgs[1]
else
    print("Error: Direction must be one of up, down, forward")
    return
end

slot = tArgs[2]
if slot ~= "all" then
    slot = tonumber(slot)
    if slot<1 or slot>16 then
        print("Error: Slot must be in the range 1 to 16 or 'all'")
        return
    end
end

dump(direction,slot)