Packet API

local packets = {}
local nothing = ""

local function _addPacket(identifier,name)
        packets[identifier] = name
end

function addPacket(identifier,name)
        assert(type(identifier) == "string", "String expected, got "..type(identifier))
        assert(type(name) == "string", "String expected, got "..type(name))
        _addPacket(identifier,name)
end

function setNotFoundPacket(name)
        nothing = name
end

function getPacket(msg)
        for k,v in pairs(packets) do
                if(string.sub(msg,1,#k) == k) then
                        return v
                end
        end
        return nothing
end

function isPacket(id)
        return packets[id] == true
end

function buildPacket(id, ...)
        local args = {...}
        if (not packets[id]) then error("Invalid Packet ID",2) end
        return id .. " " .. table.concat(args, " ")
end