vanilla-wow-addons – Rev 1

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--[[
Name: AceComm-2.0
Revision: $Rev: 15440 $
Developed by: The Ace Development Team (http://www.wowace.com/index.php/The_Ace_Development_Team)
Inspired By: Ace 1.x by Turan (turan@gryphon.com)
Website: http://www.wowace.com/
Documentation: http://www.wowace.com/index.php/AceComm-2.0
SVN: http://svn.wowace.com/wowace/trunk/Ace2/AceComm-2.0
Description: Mixin to allow for inter-player addon communications.
Dependencies: AceLibrary, AceOO-2.0, AceEvent-2.0,
              ChatThrottleLib by Mikk (included)
]]

local MAJOR_VERSION = "AceComm-2.0"
local MINOR_VERSION = "$Revision: 15440 $"

if not AceLibrary then error(MAJOR_VERSION .. " requires AceLibrary") end
if not AceLibrary:IsNewVersion(MAJOR_VERSION, MINOR_VERSION) then return end

if not AceLibrary:HasInstance("AceOO-2.0") then error(MAJOR_VERSION .. " requires AceOO-2.0") end

local _G = getfenv(0)

local AceOO = AceLibrary("AceOO-2.0")
local Mixin = AceOO.Mixin
local AceComm = Mixin {
                                                "SendCommMessage",
                                                "SendPrioritizedCommMessage",
                                                "RegisterComm",
                                                "UnregisterComm",
                                                "UnregisterAllComms",
                                                "IsCommRegistered",
                                                "SetDefaultCommPriority",
                                                "SetCommPrefix",
                                                "RegisterMemoizations",
                                                "IsUserInChannel",
                                          }
AceComm.hooks = {}

local AceEvent = AceLibrary:HasInstance("AceEvent-2.0") and AceLibrary("AceEvent-2.0")

local table_setn
do
        local version = GetBuildInfo()
        if string.find(version, "^2%.") then
                -- 2.0.0
                table_setn = function() end
        else
                table_setn = table.setn
        end
end

local new, del
do
        local list = setmetatable({}, {__mode="k"})
        
        function new()
                local t = next(list)
                if t then
                        list[t] = nil
                else
                        t = {}
                end
                return t
        end
        
        function del(t)
                setmetatable(t, nil)
                for k in pairs(t) do
                        t[k] = nil
                end
                table_setn(t, 0)
                list[t] = true
                return nil
        end
end

local string_byte = string.byte

local byte_a = string_byte('a')
local byte_z = string_byte('z')
local byte_A = string_byte('A')
local byte_Z = string_byte('Z')
local byte_fake_s = string_byte('\015')
local byte_fake_S = string_byte('\020')
local byte_deg = string_byte('°')
local byte_percent = string_byte('%') -- 37

local byte_b = string_byte('b')
local byte_nil = string_byte('/')
local byte_plus = string_byte('+')
local byte_minus = string_byte('-')
local byte_d = string_byte('d')
local byte_D = string_byte('D')
local byte_e = string_byte('e')
local byte_E = string_byte('E')
local byte_m = string_byte('m')
local byte_s = string_byte('s')
local byte_S = string_byte('S')
local byte_o = string_byte('o')
local byte_O = string_byte('O')
local byte_t = string_byte('t')
local byte_T = string_byte('T')
local byte_u = string_byte('u')
local byte_U = string_byte('U')
local byte_i = string_byte('i')
local byte_I = string_byte('I')
local byte_j = string_byte('j')
local byte_J = string_byte('J')
local byte_inf = string_byte('@')
local byte_ninf = string_byte('$')
local byte_nan = string_byte('!')

local inf = 1/0
local nan = 0/0

local math_floor = math.floor
local math_mod = math.mod or math.fmod
local string_gfind = string.gmatch or string.gfind
local string_char = string.char
local string_len = string.len
local string_format = string.format
local string_gsub = string.gsub
local string_find = string.find
local table_insert = table.insert
local string_sub = string.sub
local table_concat = table.concat
local table_remove = table.remove

local type = type
local unpack = unpack
local pairs = pairs
local next = next

local player = UnitName("player")

local NumericCheckSum, HexCheckSum, BinaryCheckSum
local TailoredNumericCheckSum, TailoredHexCheckSum, TailoredBinaryCheckSum
do
        local SOME_PRIME = 16777213
        function NumericCheckSum(text)
                local counter = 1
                local len = string_len(text)
                for i = 1, len, 3 do
                        counter = math_mod(counter*8257, 16777259) +
                                (string_byte(text,i)) +
                                ((string_byte(text,i+1) or 1)*127) +
                                ((string_byte(text,i+2) or 2)*16383)
                end
                return math_mod(counter, 16777213)
        end
        
        function HexCheckSum(text)
                return string_format("%06x", NumericCheckSum(text))
        end
        
        function BinaryCheckSum(text)
                local num = NumericCheckSum(text)
                return string_char(num / 65536, math_mod(num / 256, 256), math_mod(num, 256))
        end
        
        function TailoredNumericCheckSum(text)
                local hash = NumericCheckSum(text)
                local a = math_floor(hash / 65536)
                local b = math_floor(math_mod(hash / 256, 256))
                local c = math_mod(hash, 256)
                -- \000, \n, |, °, s, S, \015, \020
                if a == 0 or a == 10 or a == 124 or a == 176 or a == 115 or a == 83 or a == 15 or a == 20 or a == 37 then
                        a = a + 1
                -- \t, \255
                elseif a == 9 or a == 255 then
                        a = a - 1
                end
                if b == 0 or b == 10 or b == 124 or b == 176 or b == 115 or b == 83 or b == 15 or b == 20 or b == 37 then
                        b = b + 1
                elseif b == 9 or b == 255 then
                        b = b - 1
                end
                if c == 0 or c == 10 or c == 124 or c == 176 or c == 115 or c == 83 or c == 15 or c == 20 or c == 37 then
                        c = c + 1
                elseif c == 9 or c == 255 then
                        c = c - 1
                end
                return a * 65536 + b * 256 + c
        end
        
        function TailoredHexCheckSum(text)
                return string_format("%06x", TailoredNumericCheckSum(text))
        end
        
        function TailoredBinaryCheckSum(text)
                local num = TailoredNumericCheckSum(text)
                return string_char(num / 65536, math_mod(num / 256, 256), math_mod(num, 256))
        end
end

local function GetLatency()
        local _,_,lag = GetNetStats()
        return lag / 1000
end

local function IsInChannel(chan)
        return GetChannelName(chan) ~= 0
end

-- Package a message for transmission
local function Encode(text, drunk)
        text = string_gsub(text, "°", "°±")
        if drunk then
                text = string_gsub(text, "\020", "°\021")
                text = string_gsub(text, "\015", "°\016")
                text = string_gsub(text, "S", "\020")
                text = string_gsub(text, "s", "\015")
                -- change S and s to a different set of character bytes.
        end
        text = string_gsub(text, "\255", "°\254") -- \255 (this is here because \000 is more common)
        text = string_gsub(text, "%z", "\255") -- \000
        text = string_gsub(text, "\010", "°\011") -- \n
        text = string_gsub(text, "\124", "°\125") -- |
        text = string_gsub(text, "%%", "°\038") -- %
        -- encode assorted prohibited characters
        return text
end

local func
-- Clean a received message
local function Decode(text, drunk)
        if drunk then
                local _,x = string_find(text, "^.*°")
                text = string_gsub(text, "^(.*)°.-$", "%1")
                -- get rid of " ...hic!"
        end
        if not func then
                func = function(text)
                        if text == "\016" then
                                return "\015"
                        elseif text == "\021" then
                                return "\020"
                        elseif text == "±" then
                                return "°"
                        elseif text == "\254" then
                                return "\255"
                        elseif text == "\011" then
                                return "\010"
                        elseif text == "\125" then
                                return "\124"
                        elseif text == "\038" then
                                return "\037"
                        end
                end
        end
        text = string_gsub(text, "\255", "\000")
        if drunk then
                text = string_gsub(text, "\020", "S")
                text = string_gsub(text, "\015", "s")
        end
        text = string_gsub(text, drunk and "°([\016\021±\254\011\125\038])" or "°([±\254\011\125\038])", func)
        -- remove the hidden character and refix the prohibited characters.
        return text
end

local lastChannelJoined

function AceComm.hooks:JoinChannelByName(orig, channel, a,b,c,d,e,f,g,h,i)
        lastChannelJoined = channel
        return orig(channel, a,b,c,d,e,f,g,h,i)
end

local function JoinChannel(channel)
        if not IsInChannel(channel) then
                LeaveChannelByName(channel)
                AceComm:ScheduleEvent(JoinChannelByName, 0, channel)
        end
end

local function LeaveChannel(channel)
        if IsInChannel(channel) then
                LeaveChannelByName(channel)
        end
end

local switches = {}

local function SwitchChannel(former, latter)
        if IsInChannel(former) then
                LeaveChannelByName(former)
                local t = new()
                t.former = former
                t.latter = latter
                switches[t] = true
                return
        end
        if not IsInChannel(latter) then
                JoinChannelByName(latter)
        end
end

local shutdown = false

local zoneCache
local function GetCurrentZoneChannel()
        if not zoneCache then
                zoneCache = "AceCommZone" .. HexCheckSum(GetRealZoneText())
        end
        return zoneCache
end

local AceComm_registry

local function SupposedToBeInChannel(chan)
        if not string_find(chan, "^AceComm") then
                return true
        elseif shutdown or not AceEvent:IsFullyInitialized() then
                return false
        end
        
        if chan == "AceComm" then
                return AceComm_registry.GLOBAL and next(AceComm_registry.GLOBAL) and true or false
        elseif string_find(chan, "^AceCommZone%x%x%x%x%x%x$") then
                if chan == GetCurrentZoneChannel() then
                        return AceComm_registry.ZONE and next(AceComm_registry.ZONE) and true or false
                else
                        return false
                end
        else
                return AceComm_registry.CUSTOM and AceComm_registry.CUSTOM[chan] and next(AceComm_registry.CUSTOM[chan]) and true or false
        end
end

local function LeaveAceCommChannels(all)
        if all then
                shutdown = true
        end
        local _,a,_,b,_,c,_,d,_,e,_,f,_,g,_,h,_,i,_,j = GetChannelList()
        local t = new()
        t[1] = a
        t[2] = b
        t[3] = c
        t[4] = d
        t[5] = e
        t[6] = f
        t[7] = g
        t[8] = h
        t[9] = i
        t[10] = j
        for _,v in ipairs(t) do
                if v and string_find(v, "^AceComm") then
                        if not SupposedToBeInChannel(v) then
                                LeaveChannelByName(v)
                        end
                end
        end
        t = del(t)
end

local lastRefix = 0
local function RefixAceCommChannelsAndEvents()
        if GetTime() - lastRefix <= 5 then
                AceComm:ScheduleEvent(RefixAceCommChannelsAndEvents, 1)
                return
        end
        lastRefix = GetTime()
        LeaveAceCommChannels(false)
        
        local channel = false
        local whisper = false
        local addon = false
        if SupposedToBeInChannel("AceComm") then
                JoinChannel("AceComm")
                channel = true
        end
        if SupposedToBeInChannel(GetCurrentZoneChannel()) then
                JoinChannel(GetCurrentZoneChannel())
                channel = true
        end
        if AceComm_registry.CUSTOM then
                for k,v in pairs(AceComm_registry.CUSTOM) do
                        if next(v) then
                                JoinChannel(k)
                                channel = true
                        end
                end
        end
        if AceComm_registry.WHISPER then
                whisper = true
        end
        if AceComm_registry.GROUP or AceComm_registry.PARTY or AceComm_registry.RAID or AceComm_registry.BATTLEGROUND or AceComm_registry.GUILD then
                addon = true
        end
        
        if channel then
                if not AceComm:IsEventRegistered("CHAT_MSG_CHANNEL") then
                        AceComm:RegisterEvent("CHAT_MSG_CHANNEL")
                end
                if not AceComm:IsEventRegistered("CHAT_MSG_CHANNEL_LIST") then
                        AceComm:RegisterEvent("CHAT_MSG_CHANNEL_LIST")
                end
                if not AceComm:IsEventRegistered("CHAT_MSG_CHANNEL_JOIN") then
                        AceComm:RegisterEvent("CHAT_MSG_CHANNEL_JOIN")
                end
                if not AceComm:IsEventRegistered("CHAT_MSG_CHANNEL_LEAVE") then
                        AceComm:RegisterEvent("CHAT_MSG_CHANNEL_LEAVE")
                end
        else
                if AceComm:IsEventRegistered("CHAT_MSG_CHANNEL") then
                        AceComm:UnregisterEvent("CHAT_MSG_CHANNEL")
                end
                if AceComm:IsEventRegistered("CHAT_MSG_CHANNEL_LIST") then
                        AceComm:UnregisterEvent("CHAT_MSG_CHANNEL_LIST")
                end
                if AceComm:IsEventRegistered("CHAT_MSG_CHANNEL_JOIN") then
                        AceComm:UnregisterEvent("CHAT_MSG_CHANNEL_JOIN")
                end
                if AceComm:IsEventRegistered("CHAT_MSG_CHANNEL_LEAVE") then
                        AceComm:UnregisterEvent("CHAT_MSG_CHANNEL_LEAVE")
                end
        end
        
        if whisper then
                if not AceComm:IsEventRegistered("CHAT_MSG_WHISPER") then
                        AceComm:RegisterEvent("CHAT_MSG_WHISPER")
                end
        else
                if AceComm:IsEventRegistered("CHAT_MSG_WHISPER") then
                        AceComm:UnregisterEvent("CHAT_MSG_WHISPER")
                end
        end
        
        if addon then
                if not AceComm:IsEventRegistered("CHAT_MSG_ADDON") then
                        AceComm:RegisterEvent("CHAT_MSG_ADDON")
                end
        else
                if AceComm:IsEventRegistered("CHAT_MSG_ADDON") then
                        AceComm:UnregisterEvent("CHAT_MSG_ADDON")
                end
        end
end


do
        local myFunc = function(k)
                if not IsInChannel(k.latter) then
                        JoinChannelByName(k.latter)
                end
                del(k)
                switches[k] = nil
        end
        
        function AceComm:CHAT_MSG_CHANNEL_NOTICE(kind, _, _, deadName, _, _, _, num, channel)
                if kind == "YOU_LEFT" then
                        if not string_find(channel, "^AceComm") then
                                return
                        end
                        for k in pairs(switches) do
                                if k.former == channel then
                                        self:ScheduleEvent(myFunc, 0, k)
                                end
                        end
                        if channel == GetCurrentZoneChannel() then
                                self:TriggerEvent("AceComm_LeftChannel", "ZONE")
                        elseif channel == "AceComm" then
                                self:TriggerEvent("AceComm_LeftChannel", "GLOBAL")
                        else
                                self:TriggerEvent("AceComm_LeftChannel", "CUSTOM", string_sub(channel, 8))
                        end
                        if string_find(channel, "^AceComm") and SupposedToBeInChannel(channel) then
                                self:ScheduleEvent(JoinChannel, 0, channel)
                        end
                        if AceComm.userRegistry[channel] then
                                AceComm.userRegistry[channel] = del(AceComm.userRegistry[channel])
                        end
                elseif kind == "YOU_JOINED" then
                        if not string_find(num == 0 and deadName or channel, "^AceComm") then
                                return
                        end
                        if num == 0 then
                                self:ScheduleEvent(LeaveChannelByName, 0, deadName)
                                local t = new()
                                t.former = deadName
                                t.latter = deadName
                                switches[t] = true
                        elseif channel == GetCurrentZoneChannel() then
                                self:TriggerEvent("AceComm_JoinedChannel", "ZONE")
                        elseif channel == "AceComm" then
                                self:TriggerEvent("AceComm_JoinedChannel", "GLOBAL")
                        else
                                self:TriggerEvent("AceComm_JoinedChannel", "CUSTOM", string_sub(channel, 8))
                        end
                        if num ~= 0 then
                                if not SupposedToBeInChannel(channel) then
                                        LeaveChannel(channel)
                                else
                                        ListChannelByName(channel)
                                end
                        end
                end
        end
end

local Serialize
do
        local recurse
        local function _Serialize(v, textToHash)
                local kind = type(v)
                if kind == "boolean" then
                        if v then
                                return "by"
                        else
                                return "bn"
                        end
                elseif not v then -- nil
                        return "/"
                elseif kind == "number" then
                        if v == math_floor(v) then
                                if v <= 127 and v >= -128 then
                                        if v < 0 then
                                                v = v + 256
                                        end
                                        return string_char(byte_d, v)
                                elseif v <= 32767 and v >= -32768 then
                                        if v < 0 then
                                                v = v + 65536
                                        end
                                        return string_char(byte_D, v / 256, math_mod(v, 256))
                                elseif v <= 2147483647 and v >= -2147483648 then
                                        if v < 0 then
                                                v = v + 4294967296
                                        end
                                        return string_char(byte_e, v / 16777216, math_mod(v / 65536, 256), math_mod(v / 256, 256), math_mod(v, 256))
                                elseif v <= 9223372036854775807 and v >= -9223372036854775808 then
                                        if v < 0 then
                                                v = v + 18446744073709551616
                                        end
                                        return string_char(byte_E, v / 72057594037927936, math_mod(v / 281474976710656, 256), math_mod(v / 1099511627776, 256), math_mod(v / 4294967296, 256), math_mod(v / 16777216, 256), math_mod(v / 65536, 256), math_mod(v / 256, 256), math_mod(v, 256))
                                end
                        elseif v == inf then
                                return string_char(64 --[[byte_inf]])
                        elseif v == -inf then
                                return string_char(36 --[[byte_ninf]])
                        elseif v ~= v then
                                return string_char(33 --[[byte_nan]])
                        end
--                      do
--                              local s = tostring(v)
--                              local len = string_len(s)
--                              return string_char(byte_plus, len) .. s
--                      end
                        local sign = v < 0 or v == 0 and tostring(v) == "-0"
                        if sign then
                                v = -v
                        end
                        local m, exp = math.frexp(v)
                        m = m * 9007199254740992
                        local x = exp + 1023
                        local b = math_mod(m, 256)
                        local c = math_mod(math_floor(m / 256), 256)
                        m = math_floor(m / 65536)
                        m = m + x * 137438953472
                        return string_char(sign and byte_minus or byte_plus, math_mod(m / 1099511627776, 256), math_mod(m / 4294967296, 256), math_mod(m / 16777216, 256), math_mod(m / 65536, 256), math_mod(m / 256, 256), math_mod(m, 256), c, b)
                elseif kind == "string" then
                        local hash = textToHash and textToHash[v]
                        if hash then
                                return string_char(byte_m, hash / 65536, math_mod(hash / 256, 256), math_mod(hash, 256))
                        end
                        local _,_,A,B,C = string_find(v, "|cff%x%x%x%x%x%x|Hitem:(%d+):(%d+):(%d+):%d+|h%[.+%]|h|r")
                        if A then
                                -- item link
                                A = tonumber(A)
                                B = tonumber(B)
                                C = tonumber(C)
                                if C ~= 0 then
                                        if B ~= 0 then
                                                return string_char(byte_I, math_mod(A / 65536, 256), math_mod(A / 256, 256), math_mod(A, 256), math_mod(B / 256, 256), math_mod(B, 256), math_mod(C / 256, 256), math_mod(C, 256))
                                        else
                                                return string_char(byte_j, math_mod(A / 65536, 256), math_mod(A / 256, 256), math_mod(A, 256), math_mod(C / 256, 256), math_mod(C, 256))
                                        end
                                else
                                        if B ~= 0 then
                                                return string_char(byte_J, math_mod(A / 65536, 256), math_mod(A / 256, 256), math_mod(A, 256), math_mod(B / 256, 256), math_mod(B, 256))
                                        else
                                                return string_char(byte_i, math_mod(A / 65536, 256), math_mod(A / 256, 256), math_mod(A, 256))
                                        end
                                end
                        else
                                -- normal string
                                local len = string_len(v)
                                if len <= 255 then
                                        return string_char(byte_s, len) .. v
                                else
                                        return string_char(byte_S, len / 256, math_mod(len, 256)) .. v
                                end
                        end
                elseif kind == "function" then
                        AceComm:error("Cannot serialize a function")
                elseif kind == "table" then
                        if recurse[v] then
                                for k in pairs(recurse) do
                                        recurse[k] = nil
                                end
                                AceComm:error("Cannot serialize a recursive table")
                                return
                        end
                        recurse[v] = true
                        if AceOO.inherits(v, AceOO.Class) then
                                if not v.class then
                                        AceComm:error("Cannot serialize an AceOO class, can only serialize objects")
                                elseif type(v.Serialize) ~= "function" then
                                        AceComm:error("Cannot serialize an AceOO object without the `Serialize' method.")
                                elseif type(v.class.Deserialize) ~= "function" then
                                        AceComm:error("Cannot serialize an AceOO object without the `Deserialize' static method.")
                                elseif type(v.class.GetLibraryVersion) ~= "function" or not AceLibrary:HasInstance(v.class:GetLibraryVersion()) then
                                        AceComm:error("Cannot serialize an AceOO object if the class is not registered with AceLibrary.")
                                end
                                local classHash = TailoredBinaryCheckSum(v.class:GetLibraryVersion())
                                local a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20 = v:Serialize()
                                local t = new()
                                t[2] = a1
                                t[3] = a2
                                t[4] = a3
                                t[5] = a4
                                t[6] = a5
                                t[7] = a6
                                t[8] = a7
                                t[9] = a8
                                t[10] = a9
                                t[11] = a10
                                t[12] = a11
                                t[13] = a12
                                t[14] = a13
                                t[15] = a14
                                t[16] = a15
                                t[17] = a16
                                t[18] = a17
                                t[19] = a18
                                t[20] = a19
                                t[21] = a20
                                local n = 21
                                while n > 1 do
                                        if t[i] ~= nil then
                                                break
                                        end
                                        n = n - 1
                                end
                                for i = 2, n do
                                        t[i] = _Serialize(t[i], textToHash)
                                end
                                t[1] = classHash
                                if not notFirst then
                                        for k in pairs(recurse) do
                                                recurse[k] = nil
                                        end
                                end
                                table_setn(t, n)
                                local s = table.concat(t)
                                t = del(t)
                                local len = string_len(s)
                                if len <= 255 then
                                        return string_char(byte_o, len) .. s
                                else
                                        return string_char(byte_O, len / 256, math_mod(len, 256)) .. s
                                end
                        end
                        local t = new()
                        local islist = false
                        local n = table.getn(v)
                        if n >= 1 or n <= 40 then
                                islist = true
                                for k,u in pairs(v) do
                                        if (type(k) ~= "number" or k > n or k < 1) and (k ~= "n" or type(v) ~= "number") then
                                                islist = false
                                                break
                                        end
                                end
                        end
                        if islist then
                                for i = 1, n do
                                        t[i] = _Serialize(v[i], textToHash)
                                end
                                table_setn(t, n)
                        else
                                local i = 1
                                for k,u in pairs(v) do
                                        t[i] = _Serialize(k, textToHash)
                                        t[i+1] = _Serialize(u, textToHash)
                                        i = i + 2
                                end
                                table_setn(t, i - 1)
                        end
                        if not notFirst then
                                for k in pairs(recurse) do
                                        recurse[k] = nil
                                end
                        end
                        local s = table.concat(t)
                        t = del(t)
                        local len = string_len(s)
                        if islist then
                                if len <= 255 then
                                        return string_char(byte_u, len) .. s
                                else
                                        return "U" .. string_char(len / 256, math_mod(len, 256)) .. s
                                end
                        else
                                if len <= 255 then
                                        return "t" .. string_char(len) .. s
                                else
                                        return "T" .. string_char(len / 256, math_mod(len, 256)) .. s
                                end
                        end
                end
        end
        
        function Serialize(value, textToHash)
                if not recurse then
                        recurse = new()
                end
                local chunk = _Serialize(value, textToHash)
                for k in pairs(recurse) do
                        recurse[k] = nil
                end
                return chunk
        end
end

local Deserialize
do
        local function _Deserialize(value, position, hashToText)
                if not position then
                        position = 1
                end
                local x = string_byte(value, position)
                if x == byte_b then
                        -- boolean
                        local v = string_byte(value, position + 1)
                        if v == 110 then -- 'n'
                                return false, position + 1
                        elseif v == 121 then -- 'y'
                                return true, position + 1
                        else
                                error("Improper serialized value provided")
                        end
                elseif x == byte_nil then
                        -- nil
                        return nil, position
                elseif x == byte_I then
                        -- 7-byte item link
                        local a1 = string_byte(value, position + 1)
                        local a2 = string_byte(value, position + 2)
                        local a3 = string_byte(value, position + 3)
                        local b1 = string_byte(value, position + 4)
                        local b2 = string_byte(value, position + 5)
                        local c1 = string_byte(value, position + 6)
                        local c2 = string_byte(value, position + 7)
                        local A = a1 * 65536 + a2 * 256 + a3
                        local B = b1 * 256 + b2
                        local C = c1 * 256 + c2
                        local s = "item:" .. A .. ":" .. B .. ":" .. C .. ":0"
                        local name, code, quality = GetItemInfo(s)
                        if name then
                                local _,_,_,color = GetItemQualityColor(quality)
                                return color .. "|H" .. code .. "|h[" .. name .. "]|h|r", position + 7
                        else
                                return nil, position + 7
                        end
                elseif x == byte_i then
                        -- 3-byte item link
                        local a1 = string_byte(value, position + 1)
                        local a2 = string_byte(value, position + 2)
                        local a3 = string_byte(value, position + 3)
                        local A = a1 * 65536 + a2 * 256 + a3
                        local s = "item:" .. A .. ":0:0:0"
                        local name, code, quality = GetItemInfo(s)
                        if name then
                                local _,_,_,color = GetItemQualityColor(quality)
                                return color .. "|H" .. code .. "|h[" .. name .. "]|h|r", position + 3
                        else
                                return nil, position + 3
                        end
                elseif x == byte_j then
                        -- 5-byte item link
                        local a1 = string_byte(value, position + 1)
                        local a2 = string_byte(value, position + 2)
                        local a3 = string_byte(value, position + 3)
                        local c1 = string_byte(value, position + 4)
                        local c2 = string_byte(value, position + 5)
                        local A = a1 * 65536 + a2 * 256 + a3
                        local C = c1 * 256 + c2
                        local s = "item:" .. A .. ":0:" .. C .. ":0"
                        local name, code, quality = GetItemInfo(s)
                        if name then
                                local _,_,_,color = GetItemQualityColor(quality)
                                return color .. "|H" .. code .. "|h[" .. name .. "]|h|r", position + 5
                        else
                                return nil, position + 5
                        end
                elseif x == byte_J then
                        -- 5-byte item link
                        local a1 = string_byte(value, position + 1)
                        local a2 = string_byte(value, position + 2)
                        local a3 = string_byte(value, position + 3)
                        local b1 = string_byte(value, position + 4)
                        local b2 = string_byte(value, position + 5)
                        local A = a1 * 65536 + a2 * 256 + a3
                        local B = b1 * 256 + b2
                        local s = "item:" .. A .. ":" .. B .. ":0:0"
                        local name, code, quality = GetItemInfo(s)
                        if name then
                                local _,_,_,color = GetItemQualityColor(quality)
                                return color .. "|H" .. code .. "|h[" .. name .. "]|h|r", position + 5
                        else
                                return nil, position + 5
                        end
                elseif x == byte_m then
                        local hash = string_byte(value, position + 1) * 65536 + string_byte(value, position + 2) * 256 + string_byte(value, position + 3)
                        return hashToText[hash], position + 3
                elseif x == byte_s then
                        -- 0-255-byte string
                        local len = string_byte(value, position + 1)
                        return string.sub(value, position + 2, position + 1 + len), position + 1 + len
                elseif x == byte_S then
                        -- 256-65535-byte string
                        local len = string_byte(value, position + 1) * 256 + string_byte(value, position + 2)
                        return string.sub(value, position + 3, position + 2 + len), position + 2 + len
                elseif x == 64 --[[byte_inf]] then
                        return inf, position
                elseif x == 36 --[[byte_ninf]] then
                        return -inf, position
                elseif x == 33 --[[byte_nan]] then
                        return nan, position
                elseif x == byte_d then
                        -- 1-byte integer
                        local a = string_byte(value, position + 1)
                        if a >= 128 then
                                a = a - 256
                        end
                        return a, position + 1
                elseif x == byte_D then
                        -- 2-byte integer
                        local a = string_byte(value, position + 1)
                        local b = string_byte(value, position + 2)
                        local N = a * 256 + b
                        if N >= 32768 then
                                N = N - 65536
                        end
                        return N, position + 2
                elseif x == byte_e then
                        -- 4-byte integer
                        local a = string_byte(value, position + 1)
                        local b = string_byte(value, position + 2)
                        local c = string_byte(value, position + 3)
                        local d = string_byte(value, position + 4)
                        local N = a * 16777216 + b * 65536 + c * 256 + d
                        if N >= 2147483648 then
                                N = N - 4294967296
                        end
                        return N, position + 4
                elseif x == byte_E then
                        -- 8-byte integer
                        local a = string_byte(value, position + 1)
                        local b = string_byte(value, position + 2)
                        local c = string_byte(value, position + 3)
                        local d = string_byte(value, position + 4)
                        local e = string_byte(value, position + 5)
                        local f = string_byte(value, position + 6)
                        local g = string_byte(value, position + 7)
                        local h = string_byte(value, position + 8)
                        local N = a * 72057594037927936 + b * 281474976710656 + c * 1099511627776 + d * 4294967296 + e * 16777216 + f * 65536 + g * 256 + h
                        if N >= 9223372036854775808 then
                                N = N - 18446744073709551616
                        end
                        return N, position + 8
                elseif x == byte_plus or x == byte_minus then
                        local a = string_byte(value, position + 1)
                        local b = string_byte(value, position + 2)
                        local c = string_byte(value, position + 3)
                        local d = string_byte(value, position + 4)
                        local e = string_byte(value, position + 5)
                        local f = string_byte(value, position + 6)
                        local g = string_byte(value, position + 7)
                        local h = string_byte(value, position + 8)
                        local N = a * 1099511627776 + b * 4294967296 + c * 16777216 + d * 65536 + e * 256 + f
                        local sign = x
                        local x = math.floor(N / 137438953472)
                        local m = math_mod(N, 137438953472) * 65536 + g * 256 + h
                        local mantissa = m / 9007199254740992
                        local exp = x - 1023
                        local val = math.ldexp(mantissa, exp)
                        if sign == byte_minus then
                                return -val, position + 8
                        end
                        return val, position + 8
                elseif x == byte_u or x == byte_U then
                        -- numerically-indexed table
                        local finish
                        local start
                        if x == byte_u then
                                local len = string_byte(value, position + 1)
                                finish = position + 1 + len
                                start = position + 2
                        else
                                local len = string_byte(value, position + 1) * 256 + string_byte(value, position + 2)
                                finish = position + 2 + len
                                start = position + 3
                        end
                        local t = new()
                        local n = 0
                        local curr = start - 1
                        while curr < finish do
                                local v
                                v, curr = _Deserialize(value, curr + 1, hashToText)
                                n = n + 1
                                t[n] = v
                        end
                        table_setn(t, n)
                        return t, finish
                elseif x == byte_o or x == byte_O then
                        -- numerically-indexed table
                        local finish
                        local start
                        if x == byte_o then
                                local len = string_byte(value, position + 1)
                                finish = position + 1 + len
                                start = position + 2
                        else
                                local len = string_byte(value, position + 1) * 256 + string_byte(value, position + 2)
                                finish = position + 2 + len
                                start = position + 3
                        end
                        local hash = string_byte(value, start) * 65536 + string_byte(value, start + 1) * 256 + string_byte(value, start + 2)
                        local curr = start + 2
                        if not AceComm.classes[hash] then
                                return nil, finish
                        end
                        local class = AceComm.classes[hash]
                        if type(class.Deserialize) ~= "function" or type(class.prototype.Serialize) ~= "function" then
                                return nil, finish
                        end
                        local t = new()
                        local n = 0
                        while curr < finish do
                                local v
                                v, curr = _Deserialize(value, curr + 1, hashToText)
                                n = n + 1
                                t[n] = v
                        end
                        table_setn(t, n)
                        local object = class:Deserialize(unpack(t))
                        del(t)
                        return object, finish
                elseif x == byte_t or x == byte_T then
                        -- table
                        local finish
                        local start
                        if x == byte_t then
                                local len = string_byte(value, position + 1)
                                finish = position + 1 + len
                                start = position + 2
                        else
                                local len = string_byte(value, position + 1) * 256 + string_byte(value, position + 2)
                                finish = position + 2 + len
                                start = position + 3
                        end
                        local t = new()
                        local curr = start - 1
                        while curr < finish do
                                local key, l = _Deserialize(value, curr + 1, hashToText)
                                local value, m = _Deserialize(value, l + 1, hashToText)
                                curr = m
                                t[key] = value
                        end
                        if type(t.n) ~= "number" then
                                local i = 1
                                while t[i] ~= nil do
                                        i = i + 1
                                end
                                table_setn(t, i - 1)
                        end
                        return t, finish
                else
                        error("Improper serialized value provided")
                end
        end
        
        function Deserialize(value, hashToText)
                local ret,msg = pcall(_Deserialize, value, nil, hashToText)
                if ret then
                        return msg
                end
        end
end

local function GetCurrentGroupDistribution()
        if MiniMapBattlefieldFrame.status == "active" then
                return "BATTLEGROUND"
        elseif UnitInRaid("player") then
                return "RAID"
        elseif UnitInParty("player") then
                return "PARTY"
        else
                return nil
        end
end

local function IsInDistribution(dist, customChannel)
        if dist == "GROUP" then
                return GetCurrentGroupDistribution() and true or false
        elseif dist == "BATTLEGROUND" then
                return MiniMapBattlefieldFrame.status == "active"
        elseif dist == "RAID" then
                return UnitInRaid("player") == 1
        elseif dist == "PARTY" then
                return UnitInParty("player") == 1
        elseif dist == "GUILD" then
                return IsInGuild() == 1
        elseif dist == "GLOBAL" then
                return IsInChannel("AceComm")
        elseif dist == "ZONE" then
                return IsInChannel(GetCurrentZoneChannel())
        elseif dist == "WHISPER" then
                return true
        elseif dist == "CUSTOM" then
                return IsInChannel(customChannel)
        end
        error("unknown distribution: " .. dist, 2)
end

function AceComm:RegisterComm(prefix, distribution, method, a4)
        AceComm:argCheck(prefix, 2, "string")
        AceComm:argCheck(distribution, 3, "string")
        if distribution ~= "GLOBAL" and distribution ~= "WHISPER" and distribution ~= "PARTY" and distribution ~= "RAID" and distribution ~= "GUILD" and distribution ~= "BATTLEGROUND" and distribution ~= "GROUP" and distribution ~= "ZONE" and distribution ~= "CUSTOM" then
                AceComm:error('Argument #3 to `RegisterComm\' must be either "GLOBAL", "ZONE", "WHISPER", "PARTY", "RAID", "GUILD", "BATTLEGROUND", "GROUP", or "CUSTOM". %q is not appropriate', distribution)
        end
        local customChannel
        if distribution == "CUSTOM" then
                customChannel, method = method, a4
                AceComm:argCheck(customChannel, 4, "string")
                if string_len(customChannel) == 0 then
                        AceComm:error('Argument #4 to `RegisterComm\' must be a non-zero-length string.')
                elseif string_find(customChannel, "%s") then
                        AceComm:error('Argument #4 to `RegisterComm\' must not have spaces.')
                end
        end
        if self == AceComm then
                AceComm:argCheck(method, customChannel and 5 or 4, "function", "table")
                self = method
        else
                AceComm:argCheck(method, customChannel and 5 or 4, "string", "function", "table", "nil")
        end
        if not method then
                method = "OnCommReceive"
        end
        if type(method) == "string" and type(self[method]) ~= "function" and type(self[method]) ~= "table" then
                AceEvent:error("Cannot register comm %q to method %q, it does not exist", prefix, method)
        end
        
        local registry = AceComm_registry
        if not registry[distribution] then
                registry[distribution] = new()
        end
        if customChannel then
                customChannel = "AceComm" .. customChannel
                if not registry[distribution][customChannel] then
                        registry[distribution][customChannel] = new()
                end
                if not registry[distribution][customChannel][prefix] then
                        registry[distribution][customChannel][prefix] = new()
                end
                registry[distribution][customChannel][prefix][self] = method
        else
                if not registry[distribution][prefix] then
                        registry[distribution][prefix] = new()
                end
                registry[distribution][prefix][self] = method
        end
        
        RefixAceCommChannelsAndEvents()
end

function AceComm:UnregisterComm(prefix, distribution, customChannel)
        AceComm:argCheck(prefix, 2, "string")
        AceComm:argCheck(distribution, 3, "string", "nil")
        if distribution and distribution ~= "GLOBAL" and distribution ~= "WHISPER" and distribution ~= "PARTY" and distribution ~= "RAID" and distribution ~= "GUILD" and distribution ~= "BATTLEGROUND" and distribution ~= "GROUP" and distribution ~= "CUSTOM" then
                AceComm:error('Argument #3 to `UnregisterComm\' must be either nil, "GLOBAL", "WHISPER", "PARTY", "RAID", "GUILD", "BATTLEGROUND", "GROUP", or "CUSTOM". %q is not appropriate', distribution)
        end
        if distribution == "CUSTOM" then
                AceComm:argCheck(customChannel, 3, "string")
                if string_len(customChannel) == 0 then
                        AceComm:error('Argument #3 to `UnregisterComm\' must be a non-zero-length string.')
                end
        else
                AceComm:argCheck(customChannel, 3, "nil")
        end
        
        local registry = AceComm_registry
        if not distribution then
                for k,v in pairs(registry) do
                        if k == "CUSTOM" then
                                for l,u in pairs(v) do
                                        if u[prefix] and u[prefix][self] then
                                                AceComm.UnregisterComm(self, prefix, k, string.sub(l, 8))
                                                if not registry[k] then
                                                        break
                                                end
                                        end
                                end
                        else
                                if v[prefix] and v[prefix][self] then
                                        AceComm.UnregisterComm(self, prefix, k)
                                end
                        end
                end
                return
        end
        if self == AceComm then
                if distribution == "CUSTOM" then
                        error(string_format("Cannot unregister comm %q::%q. Improperly unregistering from AceComm-2.0.", distribution, customChannel), 2)
                else
                        error(string_format("Cannot unregister comm %q. Improperly unregistering from AceComm-2.0.", distribution), 2)
                end
        end
        if distribution == "CUSTOM" then
                customChannel = "AceComm" .. customChannel
                if not registry[distribution] or not registry[distribution][customChannel] or not registry[distribution][customChannel][prefix] or not registry[distribution][customChannel][prefix][self] then
                        AceComm:error("Cannot unregister comm %q. %q is not registered with it.", distribution, self)
                end
                registry[distribution][customChannel][prefix][self] = nil
                
                if not next(registry[distribution][customChannel][prefix]) then
                        registry[distribution][customChannel][prefix] = del(registry[distribution][customChannel][prefix])
                end
                
                if not next(registry[distribution][customChannel]) then
                        registry[distribution][customChannel] = del(registry[distribution][customChannel])
                end
        else
                if not registry[distribution] or not registry[distribution][prefix] or not registry[distribution][prefix][self] then
                        AceComm:error("Cannot unregister comm %q. %q is not registered with it.", distribution, self)
                end
                registry[distribution][prefix][self] = nil
                
                if not next(registry[distribution][prefix]) then
                        registry[distribution][prefix] = del(registry[distribution][prefix])
                end
        end
        
        if not next(registry[distribution]) then
                registry[distribution] = del(registry[distribution])
        end
        
        RefixAceCommChannelsAndEvents()
end

function AceComm:UnregisterAllComms()
        local registry = AceComm_registry
        for k, distribution in pairs(registry) do
                if k == "CUSTOM" then
                        for l, channel in pairs(distribution) do
                                local j = next(channel)
                                while j ~= nil do
                                        local prefix = channel[j]
                                        if prefix[self] then
                                                AceComm.UnregisterComm(self, j)
                                                if distribution[l] and registry[k] then
                                                        j = next(channel)
                                                else
                                                        l = nil
                                                        k = nil
                                                        break
                                                end
                                        else
                                                j = next(channel, j)
                                        end
                                end
                                if k == nil then
                                        break
                                end
                        end
                else
                        local j = next(distribution)
                        while j ~= nil do
                                local prefix = distribution[j]
                                if prefix[self] then
                                        AceComm.UnregisterComm(self, j)
                                        if registry[k] then
                                                j = next(distribution)
                                        else
                                                k = nil
                                                break
                                        end
                                else
                                        j = next(distribution, j)
                                end
                        end
                end
        end
end

function AceComm:IsCommRegistered(prefix, distribution, customChannel)
        AceComm:argCheck(prefix, 2, "string")
        AceComm:argCheck(distribution, 3, "string", "nil")
        if distribution and distribution ~= "GLOBAL" and distribution ~= "WHISPER" and distribution ~= "PARTY" and distribution ~= "RAID" and distribution ~= "GUILD" and distribution ~= "BATTLEGROUND" and distribution ~= "GROUP" and distribution ~= "ZONE" and distribution ~= "CUSTOM" then
                AceComm:error('Argument #3 to `IsCommRegistered\' must be either "GLOBAL", "WHISPER", "PARTY", "RAID", "GUILD", "BATTLEGROUND", "GROUP", "ZONE", or "CUSTOM". %q is not appropriate', distribution)
        end
        if distribution == "CUSTOM" then
                AceComm:argCheck(customChannel, 4, "nil", "string")
                if customChannel then
                        AceComm:error('Argument #4 to `IsCommRegistered\' must be a non-zero-length string or nil.')
                end
        else
                AceComm:argCheck(customChannel, 4, "nil")
        end
        local registry = AceComm_registry
        if not distribution then
                for k,v in pairs(registry) do
                        if distribution == "CUSTOM" then
                                for l,u in pairs(v) do
                                        if u[prefix] and u[prefix][self] then
                                                return true
                                        end
                                end
                        else
                                if v[prefix] and v[prefix][self] then
                                        return true
                                end
                        end
                end
                return false
        elseif distribution == "CUSTOM" and not customChannel then
                if not registry[destination] then
                        return false
                end
                for l,u in pairs(registry[destination]) do
                        if u[prefix] and u[prefix][self] then
                                return true
                        end
                end
                return false
        elseif distribution == "CUSTOM" then
                customChannel = "AceComm" .. customChannel
                return registry[destination] and registry[destination][customChannel] and registry[destination][customChannel][prefix] and registry[destination][customChannel][prefix][self] and true or false
        end
        return registry[destination] and registry[destination][prefix] and registry[destination][prefix][self] and true or false
end

function AceComm:OnEmbedDisable(target)
        self.UnregisterAllComms(target)
end

local id = byte_Z

local function encodedChar(x)
        if x == 10 then
                return "°\011"
        elseif x == 0 then
                return "\255"
        elseif x == 255 then
                return "°\254"
        elseif x == 124 then
                return "°\125"
        elseif x == byte_s then
                return "\015"
        elseif x == byte_S then
                return "\020"
        elseif x == 15 then
                return "°\016"
        elseif x == 20 then
                return "°\021"
        elseif x == byte_deg then
                return "°±"
        elseif x == 37 then
                return "°\038"
        end
        return string_char(x)
end

local function soberEncodedChar(x)
        if x == 10 then
                return "°\011"
        elseif x == 0 then
                return "\255"
        elseif x == 255 then
                return "°\254"
        elseif x == 124 then
                return "°\125"
        elseif x == byte_deg then
                return "°±"
        elseif x == 37 then
                return "°\038"
        end
        return string_char(x)
end

local function SendMessage(prefix, priority, distribution, person, message, textToHash)
        if distribution == "CUSTOM" then
                person = "AceComm" .. person
        end
        if not IsInDistribution(distribution, person) then
                return false
        end
        if distribution == "GROUP" then
                distribution = GetCurrentGroupDistribution()
                if not distribution then
                        return false
                end
        end
        if id == byte_Z then
                id = byte_a
        elseif id == byte_z then
                id = byte_A
        else
                id = id + 1
        end
        if id == byte_s or id == byte_S then
                id = id + 1
        end
        local id = string_char(id)
        local drunk = distribution == "GLOBAL" or distribution == "WHISPER" or distribution == "ZONE" or distribution == "CUSTOM"
        prefix = Encode(prefix, drunk)
        message = Serialize(message, textToHash)
        message = Encode(message, drunk)
        local headerLen = string_len(prefix) + 6
        local messageLen = string_len(message)
        if distribution == "WHISPER" then
                AceComm.recentWhispers[string.lower(person)] = GetTime()
        end
        local max = math_floor(messageLen / (250 - headerLen) + 1)
        if max > 1 then
                local segment = math_floor(messageLen / max + 0.5)
                local last = 0
                local good = true
                for i = 1, max do
                        local bit
                        if i == max then
                                bit = string_sub(message, last + 1)
                        else
                                local next = segment * i
                                if string_byte(message, next) == byte_deg then
                                        next = next + 1
                                end
                                bit = string_sub(message, last + 1, next)
                                last = next
                        end
                        if distribution == "WHISPER" then
                                bit = "/" .. prefix .. "\t" .. id .. encodedChar(i) .. encodedChar(max) .. "\t" .. bit .. "°"
                                ChatThrottleLib:SendChatMessage(priority, prefix, bit, "WHISPER", nil, person)
                        elseif distribution == "GLOBAL" or distribution == "ZONE" or distribution == "CUSTOM" then
                                bit = prefix .. "\t" .. id .. encodedChar(i) .. encodedChar(max) .. "\t" .. bit .. "°"
                                local channel
                                if distribution == "GLOBAL" then
                                        channel = "AceComm"
                                elseif distribution == "ZONE" then
                                        channel = GetCurrentZoneChannel()
                                elseif distribution == "CUSTOM" then
                                        channel = person
                                end
                                local index = GetChannelName(channel)
                                if index and index > 0 then
                                        ChatThrottleLib:SendChatMessage(priority, prefix, bit, "CHANNEL", nil, index)
                                else
                                        good = false
                                end
                        else
                                bit = id .. soberEncodedChar(i) .. soberEncodedChar(max) .. "\t" .. bit
                                ChatThrottleLib:SendAddonMessage(priority, prefix, bit, distribution)
                        end
                end
                return good
        else
                if distribution == "WHISPER" then
                        message = "/" .. prefix .. "\t" .. id .. string_char(1) .. string_char(1) .. "\t" .. message .. "°"
                        ChatThrottleLib:SendChatMessage(priority, prefix, message, "WHISPER", nil, person)
                        return true
                elseif distribution == "GLOBAL" or distribution == "ZONE" or distribution == "CUSTOM" then
                        message = prefix .. "\t" .. id .. string_char(1) .. string_char(1) .. "\t" .. message .. "°"
                        local channel
                        if distribution == "GLOBAL" then
                                channel = "AceComm"
                        elseif distribution == "ZONE" then
                                channel = GetCurrentZoneChannel()
                        elseif distribution == "CUSTOM" then
                                channel = person
                        end
                        local index = GetChannelName(channel)
                        if index and index > 0 then
                                ChatThrottleLib:SendChatMessage(priority, prefix, message, "CHANNEL", nil, index)
                                return true
                        end
                else
                        message = id .. string_char(1) .. string_char(1) .. "\t" .. message
                        ChatThrottleLib:SendAddonMessage(priority, prefix, message, distribution)
                        return true
                end
        end
        return false
end

function AceComm:SendPrioritizedCommMessage(priority, distribution, person, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
        AceComm:argCheck(priority, 2, "string")
        if priority ~= "NORMAL" and priority ~= "BULK" and priority ~= "ALERT" then
                AceComm:error('Argument #2 to `SendPrioritizedCommMessage\' must be either "NORMAL", "BULK", or "ALERT"')
        end
        AceComm:argCheck(distribution, 3, "string")
        if distribution == "WHISPER" or distribution == "CUSTOM" then
                AceComm:argCheck(person, 4, "string")
                if string_len(person) == 0 then
                        AceComm:error("Argument #4 to `SendPrioritizedCommMessage' must be a non-zero-length string")
                end
        else
                a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20 = person, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19
        end
        if self == AceComm then
                AceComm:error("Cannot send a comm message from AceComm directly.")
        end
        if distribution and distribution ~= "GLOBAL" and distribution ~= "WHISPER" and distribution ~= "PARTY" and distribution ~= "RAID" and distribution ~= "GUILD" and distribution ~= "BATTLEGROUND" and distribution ~= "GROUP" and distribution ~= "ZONE" and distribution ~= "CUSTOM" then
                AceComm:error('Argument #4 to `SendPrioritizedCommMessage\' must be either nil, "GLOBAL", "ZONE", "WHISPER", "PARTY", "RAID", "GUILD", "BATTLEGROUND", "GROUP", or "CUSTOM". %q is not appropriate', distribution)
        end
        
        local prefix = self.commPrefix
        if type(prefix) ~= "string" then
                AceComm:error("`SetCommPrefix' must be called before sending a message.")
        end
        
        local message
        if a2 == nil and type(a1) ~= "table" then
                message = a1
        else
                message = new()
                message[1] = a1
                message[2] = a2
                message[3] = a3
                message[4] = a4
                message[5] = a5
                message[6] = a6
                message[7] = a7
                message[8] = a8
                message[9] = a9
                message[10] = a10
                message[11] = a11
                message[12] = a12
                message[13] = a13
                message[14] = a14
                message[15] = a15
                message[16] = a16
                message[17] = a17
                message[18] = a18
                message[19] = a19
                message[20] = a20
                local n = 20
                while n > 0 do
                        if message[n] ~= nil then
                                break
                        end
                        n = n - 1
                end
                table_setn(message, n)
        end
        
        local ret = SendMessage(AceComm.prefixTextToHash[prefix], priority, distribution, person, message, self.commMemoTextToHash)
        
        if message ~= a1 then
                message = del(message)
        end
        
        return ret
end

function AceComm:SendCommMessage(distribution, person, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
        AceComm:argCheck(distribution, 2, "string")
        if distribution == "WHISPER" or distribution == "CUSTOM" then
                AceComm:argCheck(person, 3, "string")
                if string_len(person) == 0 then
                        AceComm:error("Argument #3 to `SendCommMessage' must be a non-zero-length string")
                end
        else
                a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20 = person, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19
        end
        if self == AceComm then
                AceComm:error("Cannot send a comm message from AceComm directly.")
        end
        if distribution and distribution ~= "GLOBAL" and distribution ~= "WHISPER" and distribution ~= "PARTY" and distribution ~= "RAID" and distribution ~= "GUILD" and distribution ~= "BATTLEGROUND" and distribution ~= "GROUP" and distribution ~= "ZONE" and distribution ~= "CUSTOM" then
                AceComm:error('Argument #2 to `SendCommMessage\' must be either nil, "GLOBAL", "ZONE", "WHISPER", "PARTY", "RAID", "GUILD", "BATTLEGROUND", "GROUP", or "CUSTOM". %q is not appropriate', distribution)
        end
        
        local prefix = self.commPrefix
        if type(prefix) ~= "string" then
                AceComm:error("`SetCommPrefix' must be called before sending a message.")
        end
        
        local message
        if a2 == nil and type(a1) ~= "table" then
                message = a1
        else
                message = new()
                message[1] = a1
                message[2] = a2
                message[3] = a3
                message[4] = a4
                message[5] = a5
                message[6] = a6
                message[7] = a7
                message[8] = a8
                message[9] = a9
                message[10] = a10
                message[11] = a11
                message[12] = a12
                message[13] = a13
                message[14] = a14
                message[15] = a15
                message[16] = a16
                message[17] = a17
                message[18] = a18
                message[19] = a19
                message[20] = a20
                local n = 20
                while n > 0 do
                        if message[n] ~= nil then
                                break
                        end
                        n = n - 1
                end
                table_setn(message, n)
        end
        
        local priority = self.commPriority or "NORMAL"
        
        local ret = SendMessage(AceComm.prefixTextToHash[prefix], priority, distribution, person, message, self.commMemoTextToHash)
        
        if message ~= a1 then
                message = del(message)
        end
        
        return ret
end

function AceComm:SetDefaultCommPriority(priority)
        AceComm:argCheck(priority, 2, "string")
        if priority ~= "NORMAL" and priority ~= "BULK" and priority ~= "ALERT" then
                AceComm:error('Argument #2 must be either "NORMAL", "BULK", or "ALERT"')
        end
        
        if self.commPriority then
                AceComm:error("Cannot call `SetDefaultCommPriority' more than once")
        end
        
        self.commPriority = priority
end

function AceComm:SetCommPrefix(prefix)
        AceComm:argCheck(prefix, 2, "string")
        
        if self.commPrefix then
                AceComm:error("Cannot call `SetCommPrefix' more than once.")
        end
        
        if AceComm.prefixes[prefix] then
                AceComm:error("Cannot set prefix to %q, it is already in use.", prefix)
        end
        
        local hash = TailoredBinaryCheckSum(prefix)
        if AceComm.prefixHashToText[hash] then
                AceComm:error("Cannot set prefix to %q, its hash is used by another prefix: %q", prefix, AceComm.prefixHashToText[hash])
        end
        
        AceComm.prefixes[prefix] = true
        self.commPrefix = prefix
        AceComm.prefixHashToText[hash] = prefix
        AceComm.prefixTextToHash[prefix] = hash
end

function AceComm:RegisterMemoizations(values)
        AceComm:argCheck(values, 2, "table")
        for k,v in pairs(values) do
                if type(k) ~= "number" then
                        AceComm:error("Bad argument #2 to `RegisterMemoizations'. All keys must be numbers")
                elseif type(v) ~= "string" then
                        AceComm:error("Bad argument #2 to `RegisterMemoizations'. All values must be strings")
                end
        end
        if self.commMemoHashToText or self.commMemoTextToHash then
                AceComm:error("You can only call `RegisterMemoizations' once.")
        elseif not self.commPrefix then
                AceComm:error("You can only call `RegisterCommPrefix' before calling `RegisterMemoizations'.")
        elseif AceComm.prefixMemoizations[self.commPrefix] then
                AceComm:error("Another addon with prefix %q has already registered memoizations.", self.commPrefix)
        end
        local hashToText = new()
        local textToHash = new()
        for _,text in ipairs(values) do
                local hash = TailoredNumericCheckSum(text)
                if hashToText[hash] then
                        AceComm:error("%q and %q have the same checksum. You must remove one of them for memoization to work properly", hashToText[hash], text)
                else
                        textToHash[text] = hash
                        hashToText[hash] = text
                end
        end
        values = del(values)
        self.commMemoHashToText = hashToText
        self.commMemoTextToHash = textToHash
        AceComm.prefixMemoizations[self.commPrefix] = hashToText
end

local DeepReclaim
do
        local recurse
        local function _DeepReclaim(t)
                if recurse[t] then
                        return
                end
                recurse[t] = true
                for k,v in pairs(t) do
                        if type(k) == "table" and not AceOO.inherits(k, AceOO.Class) then
                                _DeepReclaim(k)
                        end
                        if type(v) == "table" and not AceOO.inherits(v, AceOO.Class) then
                                _DeepReclaim(v)
                        end
                end
                del(t)
        end
        function DeepReclaim(t)
                recurse = new()
                _DeepReclaim(t)
                recurse = del(recurse)
        end
end

local lastCheck = GetTime()
local function CheckRefix()
        if GetTime() - lastCheck >= 120 then
                lastCheck = GetTime()
                RefixAceCommChannelsAndEvents()
        end
end

local function HandleMessage(prefix, message, distribution, sender, customChannel)
        local isGroup = GetCurrentGroupDistribution() == distribution
        local isCustom = distribution == "CUSTOM"
        if (not AceComm_registry[distribution] and (not isGroup or not AceComm_registry.GROUP)) or (isCustom and not AceComm_registry.CUSTOM[customChannel]) then
                return CheckRefix()
        end
        local _, id, current, max
        if not message then
                if distribution == "WHISPER" then
                        _,_, prefix, id, current, max, message = string_find(prefix, "^/(...)\t(.)(.)(.)\t(.*)$")
                else
                        _,_, prefix, id, current, max, message = string_find(prefix, "^(...)\t(.)(.)(.)\t(.*)$")
                end
                prefix = AceComm.prefixHashToText[prefix]
                if not prefix then
                        return CheckRefix()
                end
                if isCustom then
                        if not AceComm_registry.CUSTOM[customChannel][prefix] then
                                return CheckRefix()
                        end
                else
                        if (not AceComm_registry[distribution] or not AceComm_registry[distribution][prefix]) and (not isGroup or not AceComm_registry.GROUP or not AceComm_registry.GROUP[prefix]) then
                                return CheckRefix()
                        end
                end
        else
                _,_, id, current, max, message = string_find(message, "^(.)(.)(.)\t(.*)$")
        end
        if not message then
                return
        end
        local smallCustomChannel = customChannel and string_sub(customChannel, 8)
        current = string_byte(current)
        max = string_byte(max)
        if max > 1 then
                local queue = AceComm.recvQueue
                local x
                if distribution == "CUSTOM" then
                        x = prefix .. ":" .. sender .. distribution .. customChannel .. id
                else
                        x = prefix .. ":" .. sender .. distribution .. id
                end
                if not queue[x] then
                        if current ~= 1 then
                                return
                        end
                        queue[x] = new()
                end
                local chunk = queue[x]
                chunk.time = GetTime()
                chunk[current] = message
                if current == max then
                        table_setn(chunk, max)
                        message = table_concat(chunk)
                        queue[x] = del(queue[x])
                else
                        return
                end
        end
        message = Deserialize(message, AceComm.prefixMemoizations[prefix])
        local isTable = type(message) == "table"
        if AceComm_registry[distribution] then
                if isTable then
                        if isCustom then
                                if AceComm_registry.CUSTOM[customChannel][prefix] then
                                        for k,v in pairs(AceComm_registry.CUSTOM[customChannel][prefix]) do
                                                local type_v = type(v)
                                                if type_v == "string" then
                                                        local f = k[v]
                                                        if type(f) == "table" then
                                                                local a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20 = unpack(message)
                                                                local g = f[a1]
                                                                if g then
                                                                        if type(g) == "table" then
                                                                                local h = g[a2]
                                                                                if h then
                                                                                        h(k, prefix, sender, distribution, smallCustomChannel, a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                                end
                                                                        else -- function
                                                                                g(k, prefix, sender, distribution, smallCustomChannel, a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                        end
                                                                end
                                                        else -- function
                                                                f(k, prefix, sender, distribution, smallCustomChannel, unpack(message))
                                                        end
                                                elseif type_v == "table" then
                                                        local a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20 = unpack(message)
                                                        local g = v[a1]
                                                        if g then
                                                                if type(g) == "table" then
                                                                        local h = g[a2]
                                                                        if h then
                                                                                h(prefix, sender, distribution, smallCustomChannel, a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                        end
                                                                else -- function
                                                                        g(prefix, sender, distribution, smallCustomChannel, a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                end
                                                        end
                                                else -- function
                                                        v(prefix, sender, distribution, smallCustomChannel, unpack(message))
                                                end
                                        end
                                end
                        else
                                if AceComm_registry[distribution][prefix] then
                                        for k,v in pairs(AceComm_registry[distribution][prefix]) do
                                                local type_v = type(v)
                                                if type_v == "string" then
                                                        local f = k[v]
                                                        if type(f) == "table" then
                                                                local a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20 = unpack(message)
                                                                local g = f[a1]
                                                                if g then
                                                                        if type(g) == "table" then
                                                                                local h = g[a2]
                                                                                if h then
                                                                                        h(k, prefix, sender, distribution, a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                                end
                                                                        else -- function
                                                                                g(k, prefix, sender, distribution, a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                        end
                                                                end
                                                        else -- function
                                                                f(k, prefix, sender, distribution, unpack(message))
                                                        end
                                                elseif type_v == "table" then
                                                        local a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20 = unpack(message)
                                                        local g = v[a1]
                                                        if g then
                                                                if type(g) == "table" then
                                                                        local h = g[a2]
                                                                        if h then
                                                                                h(prefix, sender, distribution, a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                        end
                                                                else -- function
                                                                        g(prefix, sender, distribution, a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                end
                                                        end
                                                else -- function
                                                        v(prefix, sender, distribution, unpack(message))
                                                end
                                        end
                                end
                        end
                else
                        if isCustom then
                                if AceComm_registry.CUSTOM[customChannel][prefix] then
                                        for k,v in pairs(AceComm_registry.CUSTOM[customChannel][prefix]) do
                                                local type_v = type(v)
                                                if type_v == "string" then
                                                        local f = k[v]
                                                        if type(f) == "table" then
                                                                local g = f[message]
                                                                if g and type(g) == "function" then
                                                                        g(k, prefix, sender, distribution, smallCustomChannel)
                                                                end
                                                        else -- function
                                                                f(k, prefix, sender, distribution, smallCustomChannel, message)
                                                        end
                                                elseif type_v == "table" then
                                                        local g = v[message]
                                                        if g and type(g) == "function" then
                                                                g(k, prefix, sender, distribution, smallCustomChannel)
                                                        end
                                                else -- function
                                                        v(prefix, sender, distribution, smallCustomChannel, message)
                                                end
                                        end
                                end
                        else
                                if AceComm_registry[distribution][prefix] then
                                        for k,v in pairs(AceComm_registry[distribution][prefix]) do
                                                local type_v = type(v)
                                                if type_v == "string" then
                                                        local f = k[v]
                                                        if type(f) == "table" then
                                                                local g = f[message]
                                                                if g and type(g) == "function" then
                                                                        g(k, prefix, sender, distribution)
                                                                end
                                                        else -- function
                                                                f(k, prefix, sender, distribution, message)
                                                        end
                                                elseif type_v == "table" then
                                                        local g = v[message]
                                                        if g and type(g) == "function" then
                                                                g(k, prefix, sender, distribution)
                                                        end
                                                else -- function
                                                        v(prefix, sender, distribution, message)
                                                end
                                        end
                                end
                        end
                end
        end
        if isGroup and AceComm_registry.GROUP and AceComm_registry.GROUP[prefix] then
                if isTable then
                        for k,v in pairs(AceComm_registry.GROUP[prefix]) do
                                local type_v = type(v)
                                if type_v == "string" then
                                        local f = k[v]
                                        if type(f) == "table" then
                                                local a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20 = unpack(message)
                                                local g = f[a1]
                                                if g then
                                                        if type(g) == "table" then
                                                                local h = g[a2]
                                                                if h then
                                                                        h(k, prefix, sender, "GROUP", a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                                end
                                                        else -- function
                                                                g(k, prefix, sender, "GROUP", a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                        end
                                                end
                                        else -- function
                                                f(k, prefix, sender, "GROUP", unpack(message))
                                        end
                                elseif type_v == "table" then
                                        local a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20 = unpack(message)
                                        local g = v[a1]
                                        if g then
                                                if type(g) == "table" then
                                                        local h = g[a2]
                                                        if h then
                                                                h(prefix, sender, "GROUP", a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                        end
                                                else -- function
                                                        g(prefix, sender, "GROUP", a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                                                end
                                        end
                                else -- function
                                        v(prefix, sender, "GROUP", unpack(message))
                                end
                        end
                else
                        for k,v in pairs(AceComm_registry.GROUP[prefix]) do
                                local type_v = type(v)
                                if type_v == "string" then
                                        local f = k[v]
                                        if type(f) == "table" then
                                                local g = f[message]
                                                if g and type(g) == "function" then
                                                        g(k, prefix, sender, "GROUP")
                                                end
                                        else -- function
                                                f(k, prefix, sender, "GROUP", message)
                                        end
                                elseif type_v == "table" then
                                        local g = v[message]
                                        if g and type(g) == "function" then
                                                g(k, prefix, sender, "GROUP")
                                        end
                                else -- function
                                        v(prefix, sender, "GROUP", message)
                                end
                        end
                end
        end
        if isTable then
                DeepReclaim(message)
        end
end

function AceComm:CHAT_MSG_ADDON(prefix, message, distribution, sender)
        if sender == player then
                return
        end
        prefix = self.prefixHashToText[prefix]
        if not prefix then
                return CheckRefix()
        end
        local isGroup = GetCurrentGroupDistribution() == distribution
        if not AceComm_registry[distribution] and (not isGroup or not AceComm_registry.GROUP) then
                return CheckRefix()
        end
        prefix = Decode(prefix)
        if (not AceComm_registry[distribution] or not AceComm_registry[distribution][prefix]) and (not isGroup or not AceComm_registry.GROUP or not AceComm_registry.GROUP[prefix]) then
                return CheckRefix()
        end
        message = Decode(message)
        return HandleMessage(prefix, message, distribution, sender)
end

function AceComm:CHAT_MSG_WHISPER(text, sender)
        if not string_find(text, "^/") then
                return
        end
        text = Decode(text, true)
        return HandleMessage(text, nil, "WHISPER", sender)
end

function AceComm:CHAT_MSG_CHANNEL(text, sender, _, _, _, _, _, _, channel)
        if sender == player or not string_find(channel, "^AceComm") then
                return
        end
        text = Decode(text, true)
        local distribution
        local customChannel
        if channel == "AceComm" then
                distribution = "GLOBAL"
        elseif channel == GetCurrentZoneChannel() then
                distribution = "ZONE"
        else
                distribution = "CUSTOM"
                customChannel = channel
        end
        return HandleMessage(text, nil, distribution, sender, customChannel)
end

function AceComm:IsUserInChannel(userName, distribution, customChannel)
        AceComm:argCheck(userName, 2, "string", "nil")
        if not userName then
                userName = player
        end
        AceComm:argCheck(distribution, 3, "string")
        local channel
        if distribution == "GLOBAL" then
                channel = "AceComm"
        elseif distribution == "ZONE" then
                channel = GetCurrentZoneChannel()
        elseif distribution == "CUSTOM" then
                AceComm:argCheck(customChannel, 4, "string")
                channel = "AceComm" .. customChannel
        else
                AceComm:error('Argument #3 to `IsUserInChannel\' must be "GLOBAL", "CUSTOM", or "ZONE"')
        end
        
        return AceComm.userRegistry[channel] and AceComm.userRegistry[channel][userName] or false
end

function AceComm:CHAT_MSG_CHANNEL_LIST(text, _, _, _, _, _, _, _, channel)
        if not string_find(channel, "^AceComm") then
                return
        end
        
        if not AceComm.userRegistry[channel] then
                AceComm.userRegistry[channel] = new()
        end
        local t = AceComm.userRegistry[channel]
        for k in string_gfind(text, "[^, @%*#]+") do
                t[k] = true
        end
end

function AceComm:CHAT_MSG_CHANNEL_JOIN(_, user, _, _, _, _, _, _, channel)
        if not string_find(channel, "^AceComm") then
                return
        end
        
        if not AceComm.userRegistry[channel] then
                AceComm.userRegistry[channel] = {}
        end
        local t = AceComm.userRegistry[channel]
        if not t[user] then
                t[user] = true
        end
end

function AceComm:CHAT_MSG_CHANNEL_LEAVE(_, user, _, _, _, _, _, _, channel)
        if not string_find(channel, "^AceComm") then
                return
        end
        
        if not AceComm.userRegistry[channel] then
                AceComm.userRegistry[channel] = {}
        end
        local t = AceComm.userRegistry[channel]
        if t[user] then
                t[user] = nil
        end
end

function AceComm:AceEvent_FullyInitialized()
        RefixAceCommChannelsAndEvents()
end

function AceComm:PLAYER_LOGOUT()
        LeaveAceCommChannels(true)
end

function AceComm:ZONE_CHANGED_NEW_AREA()
        local lastZone = zoneCache
        zoneCache = nil
        local newZone = GetCurrentZoneChannel()
        if self.registry.ZONE and next(self.registry.ZONE) then
                if lastZone then
                        SwitchChannel(lastZone, newZone)
                else
                        JoinChannel(newZone)
                end
        end
end

function AceComm:embed(target)
        self.super.embed(self, target)
        if not AceEvent then
                AceComm:error(MAJOR_VERSION .. " requires AceEvent-2.0")
        end
end

function AceComm.hooks:ChatFrame_OnEvent(orig, event)
        if event == "CHAT_MSG_WHISPER" or event == "CHAT_MSG_WHISPER_INFORM" then
                if string_find(arg1, "^/") then
                        return
                end
        elseif event == "CHAT_MSG_AFK" or event == "CHAT_MSG_DND" then
                local t = self.recentWhispers[string.lower(arg2)]
                if t and GetTime() - t <= 15 then
                        return
                end
        elseif event == "CHAT_MSG_CHANNEL" or event == "CHAT_MSG_CHANNEL_LIST" then
                if string_find(arg9, "^AceComm") then
                        return
                end
        end
        return orig(event)
end

local id, loggingOut
function AceComm.hooks:Logout(orig)
        if IsResting() then
                LeaveAceCommChannels(true)
        else
                id = self:ScheduleEvent(LeaveAceCommChannels, 15, true)
        end
        loggingOut = true
        return orig()
end

function AceComm.hooks:CancelLogout(orig)
        shutdown = false
        if id then
                self:CancelScheduledEvent(id)
                id = nil
        end
        RefixAceCommChannelsAndEvents()
        loggingOut = false
        return orig()
end

function AceComm.hooks:Quit(orig)
        if IsResting() then
                LeaveAceCommChannels(true)
        else
                id = self:ScheduleEvent(LeaveAceCommChannels, 15, true)
        end
        loggingOut = true
        return orig()
end

function AceComm.hooks:FCFDropDown_LoadChannels(orig, a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
        local arg = {a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20}
        for i = 1, table.getn(arg), 2 do
                if not arg[i] then
                        break
                end
                if type(arg[i + 1]) == "string" and string_find(arg[i + 1], "^AceComm") then
                        table.remove(arg, i + 1)
                        table.remove(arg, i)
                        i = i - 2
                end
        end
        return orig(unpack(arg))
end

function AceComm:CHAT_MSG_SYSTEM(text)
        if text ~= ERR_TOO_MANY_CHAT_CHANNELS then
                return
        end
        
        local chan = lastChannelJoined
        if not chan then
                return
        end
        if not string_find(lastChannelJoined, "^AceComm") then
                return
        end
        
        local text
        if chan == "AceComm" then
                local addon = self.registry.GLOBAL and next(AceComm_registry.GLOBAL)
                if not addon then
                        return
                end
                addon = tostring(addon)
                text = string_format("%s has tried to join the AceComm global channel, but there are not enough channels available. %s may not work because of this", addon, addon)
        elseif chan == GetCurrentZoneChannel() then
                local addon = AceComm_registry.ZONE and next(AceComm_registry.ZONE)
                if not addon then
                        return
                end
                addon = tostring(addon)
                text = string_format("%s has tried to join the AceComm zone channel, but there are not enough channels available. %s may not work because of this", addon, addon)
        else
                local addon = AceComm_registry.CUSTOM and AceComm_registry.CUSTOM[chan] and next(AceComm_registry.CUSTOM[chan])
                if not addon then
                        return
                end
                addon = tostring(addon)
                text = string_format("%s has tried to join the AceComm custom channel %s, but there are not enough channels available. %s may not work because of this", addon, chan, addon)
        end
        
        StaticPopupDialogs["ACECOMM_TOO_MANY_CHANNELS"] = {
                text = text,
                button1 = CLOSE,
                timeout = 0,
                whileDead = 1,
                hideOnEscape = 1,
        }
        StaticPopup_Show("ACECOMM_TOO_MANY_CHANNELS")
end

local function activate(self, oldLib, oldDeactivate)
        AceComm = self
        self:activate(oldLib, oldDeactivate)
        
        if oldLib then
                self.recvQueue = oldLib.recvQueue
                self.registry = oldLib.registry
                self.channels = oldLib.channels
                self.prefixes = oldLib.prefixes
                self.classes = oldLib.classes
                self.prefixMemoizations = oldLib.prefixMemoizations
                self.prefixHashToText = oldLib.prefixHashToText
                self.prefixTextToHash = oldLib.prefixTextToHash
                self.recentWhispers = oldLib.recentWhispers
                self.userRegistry = oldLib.userRegistry
        else
                local old_ChatFrame_OnEvent = ChatFrame_OnEvent
                function ChatFrame_OnEvent(event)
                        if self.hooks.ChatFrame_OnEvent then
                                return self.hooks.ChatFrame_OnEvent(self, old_ChatFrame_OnEvent, event)
                        else
                                return old_ChatFrame_OnEvent(event)
                        end
                end
                local id
                local loggingOut = false
                local old_Logout = Logout
                function Logout()
                        if self.hooks.Logout then
                                return self.hooks.Logout(self, old_Logout)
                        else
                                return old_Logout()
                        end
                end
                local old_CancelLogout = CancelLogout
                function CancelLogout()
                        if self.hooks.CancelLogout then
                                return self.hooks.CancelLogout(self, old_CancelLogout)
                        else
                                return old_CancelLogout()
                        end
                end
                local old_Quit = Quit
                function Quit()
                        if self.hooks.Quit then
                                return self.hooks.Quit(self, old_Quit)
                        else
                                return old_Quit()
                        end
                end
                local old_FCFDropDown_LoadChannels = FCFDropDown_LoadChannels
                function FCFDropDown_LoadChannels(a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20)
                        local arg = {a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20}
                        if self.hooks.FCFDropDown_LoadChannels then
                                return self.hooks.FCFDropDown_LoadChannels(self, old_FCFDropDown_LoadChannels, unpack(arg))
                        else
                                return old_FCFDropDown_LoadChannels(unpack(arg))
                        end
                end
                local old_JoinChannelByName = JoinChannelByName
                function JoinChannelByName(a,b,c,d,e,f,g,h,i,j)
                        if self.hooks.JoinChannelByName then
                                return self.hooks.JoinChannelByName(self, old_JoinChannelByName, a,b,c,d,e,f,g,h,i,j)
                        else
                                return old_JoinChannelByName(a,b,c,d,e,f,g,h,i,j)
                        end
                end
        end
        
        if not self.recvQueue then
                self.recvQueue = {}
        end
        if not self.registry then
                self.registry = {}
        end
        AceComm_registry = self.registry
        if not self.prefixes then
                self.prefixes = {}
        end
        if not self.classes then
                self.classes = {}
        else
                for k in pairs(self.classes) do
                        self.classes[k] = nil
                end
        end
        if not self.prefixMemoizations then
                self.prefixMemoizations = {}
        end
        if not self.prefixHashToText then
                self.prefixHashToText = {}
        end
        if not self.prefixTextToHash then
                self.prefixTextToHash = {}
        end
        if not self.recentWhispers then
                self.recentWhispers = {}
        end
        if not self.userRegistry then
                self.userRegistry = {}
        end
        
        if oldDeactivate then
                oldDeactivate(oldLib)
        end
end

local function external(self, major, instance)
        if major == "AceEvent-2.0" then
                AceEvent = instance
                
                AceEvent:embed(AceComm)
                
                self:UnregisterAllEvents()
                self:CancelAllScheduledEvents()
                
                if AceEvent:IsFullyInitialized() then
                        self:AceEvent_FullyInitialized()
                else
                        self:RegisterEvent("AceEvent_FullyInitialized", "AceEvent_FullyInitialized", true)
                end
                
                self:RegisterEvent("PLAYER_LOGOUT")
                self:RegisterEvent("ZONE_CHANGED_NEW_AREA")
                self:RegisterEvent("CHAT_MSG_CHANNEL_NOTICE")
                self:RegisterEvent("CHAT_MSG_SYSTEM")
        else
                if AceOO.inherits(instance, AceOO.Class) and not instance.class then
                        self.classes[TailoredNumericCheckSum(major)] = instance
                end
        end
end

AceLibrary:Register(AceComm, MAJOR_VERSION, MINOR_VERSION, activate, nil, external)





--
-- ChatThrottleLib by Mikk
--
-- Manages AddOn chat output to keep player from getting kicked off.
--
-- ChatThrottleLib.SendChatMessage/.SendAddonMessage functions that accept 
-- a Priority ("BULK", "NORMAL", "ALERT") as well as prefix for SendChatMessage.
--
-- Priorities get an equal share of available bandwidth when fully loaded.
-- Communication channels are separated on extension+chattype+destination and
-- get round-robinned. (Destination only matters for whispers and channels,
-- obviously)
--
-- Will install hooks for SendChatMessage and SendAdd[Oo]nMessage to measure
-- bandwidth bypassing the library and use less bandwidth itself.
--
--
-- Fully embeddable library. Just copy this file into your addon directory,
-- add it to the .toc, and it's done.
--
-- Can run as a standalone addon also, but, really, just embed it! :-)
--

local CTL_VERSION = 13

local MAX_CPS = 800                       -- 2000 seems to be safe if NOTHING ELSE is happening. let's call it 800.
local MSG_OVERHEAD = 40         -- Guesstimate overhead for sending a message; source+dest+chattype+protocolstuff

local BURST = 4000                              -- WoW's server buffer seems to be about 32KB. 8KB should be safe, but seen disconnects on _some_ servers. Using 4KB now.

local MIN_FPS = 20                              -- Reduce output CPS to half (and don't burst) if FPS drops below this value

if(ChatThrottleLib and ChatThrottleLib.version>=CTL_VERSION) then
        -- There's already a newer (or same) version loaded. Buh-bye.
        return;
end



if(not ChatThrottleLib) then
        ChatThrottleLib = {}
end

local ChatThrottleLib = ChatThrottleLib
local strlen = strlen
local setmetatable = setmetatable
local getn = getn
local tremove = tremove
local tinsert = tinsert
local tostring = tostring
local GetTime = GetTime
local format = format

ChatThrottleLib.version=CTL_VERSION;


-----------------------------------------------------------------------
-- Double-linked ring implementation

local Ring = {}
local RingMeta = { __index=Ring }

function Ring:New()
        local ret = {}
        setmetatable(ret, RingMeta)
        return ret;
end

function Ring:Add(obj)  -- Append at the "far end" of the ring (aka just before the current position)
        if(self.pos) then
                obj.prev = self.pos.prev;
                obj.prev.next = obj;
                obj.next = self.pos;
                obj.next.prev = obj;
        else
                obj.next = obj;
                obj.prev = obj;
                self.pos = obj;
        end
end

function Ring:Remove(obj)
        obj.next.prev = obj.prev;
        obj.prev.next = obj.next;
        if(self.pos == obj) then
                self.pos = obj.next;
                if(self.pos == obj) then
                        self.pos = nil;
                end
        end
end



-----------------------------------------------------------------------
-- Recycling bin for pipes (kept in a linked list because that's 
-- how they're worked with in the rotating rings; just reusing members)

ChatThrottleLib.PipeBin = { count=0 }

function ChatThrottleLib.PipeBin:Put(pipe)
        for i=getn(pipe),1,-1 do
                tremove(pipe, i);
        end
        pipe.prev = nil;
        pipe.next = self.list;
        self.list = pipe;
        self.count = self.count+1;
end

function ChatThrottleLib.PipeBin:Get()
        if(self.list) then
                local ret = self.list;
                self.list = ret.next;
                ret.next=nil;
                self.count = self.count - 1;
                return ret;
        end
        return {};
end

function ChatThrottleLib.PipeBin:Tidy()
        if(self.count < 25) then
                return;
        end
                
        if(self.count > 100) then
                n=self.count-90;
        else
                n=10;
        end
        for i=2,n do
                self.list = self.list.next;
        end
        local delme = self.list;
        self.list = self.list.next;
        delme.next = nil;
end




-----------------------------------------------------------------------
-- Recycling bin for messages

ChatThrottleLib.MsgBin = {}

function ChatThrottleLib.MsgBin:Put(msg)
        msg.text = nil;
        tinsert(self, msg);
end

function ChatThrottleLib.MsgBin:Get()
        local ret = tremove(self, getn(self));
        if(ret) then return ret; end
        return {};
end

function ChatThrottleLib.MsgBin:Tidy()
        if(getn(self)<50) then
                return;
        end
        if(getn(self)>150) then  -- "can't happen" but ...
                for n=getn(self),120,-1 do
                        tremove(self,n);
                end
        else
                for n=getn(self),getn(self)-20,-1 do
                        tremove(self,n);
                end
        end
end


-----------------------------------------------------------------------
-- ChatThrottleLib:Init
-- Initialize queues, set up frame for OnUpdate, etc


function ChatThrottleLib:Init() 
        
        -- Set up queues
        if(not self.Prio) then
                self.Prio = {}
                self.Prio["ALERT"] = { ByName={}, Ring = Ring:New(), avail=0 };
                self.Prio["NORMAL"] = { ByName={}, Ring = Ring:New(), avail=0 };
                self.Prio["BULK"] = { ByName={}, Ring = Ring:New(), avail=0 };
        end
        
        -- v4: total send counters per priority
        for _,Prio in pairs(self.Prio) do
                Prio.nTotalSent = Prio.nTotalSent or 0;
        end
        
        self.avail = self.avail or 0;                                                   -- v5
        self.nTotalSent = self.nTotalSent or 0;         -- v5

        
        -- Set up a frame to get OnUpdate events
        if(not self.Frame) then
                self.Frame = CreateFrame("Frame");
                self.Frame:Hide();
        end
        self.Frame.Show = self.Frame.Show; -- cache for speed
        self.Frame.Hide = self.Frame.Hide; -- cache for speed
        self.Frame:SetScript("OnUpdate", self.OnUpdate);
        self.Frame:SetScript("OnEvent", self.OnEvent);  -- v11: Monitor P_E_W so we can throttle hard for a few seconds
        self.Frame:RegisterEvent("PLAYER_ENTERING_WORLD");
        self.OnUpdateDelay=0;
        self.LastAvailUpdate=GetTime();
        self.HardThrottlingBeginTime=GetTime(); -- v11: Throttle hard for a few seconds after startup
        
        -- Hook SendChatMessage and SendAddonMessage so we can measure unpiped traffic and avoid overloads (v7)
        if(not self.ORIG_SendChatMessage) then
                --SendChatMessage
                self.ORIG_SendChatMessage = SendChatMessage;
                SendChatMessage = function(a1,a2,a3,a4) return ChatThrottleLib.Hook_SendChatMessage(a1,a2,a3,a4); end
                --SendAdd[Oo]nMessage
                if(SendAddonMessage or SendAddOnMessage) then -- v10: don't pretend like it doesn't exist if it doesn't!
                        self.ORIG_SendAddonMessage = SendAddonMessage or SendAddOnMessage;
                        SendAddonMessage = function(a1,a2,a3) return ChatThrottleLib.Hook_SendAddonMessage(a1,a2,a3); end
                        if(SendAddOnMessage) then               -- in case Slouken changes his mind...
                                SendAddOnMessage = SendAddonMessage;
                        end
                end
        end
        self.nBypass = 0;
end


-----------------------------------------------------------------------
-- ChatThrottleLib.Hook_SendChatMessage / .Hook_SendAddonMessage
function ChatThrottleLib.Hook_SendChatMessage(text, chattype, language, destination)
        local self = ChatThrottleLib;
        local size = strlen(tostring(text or "")) + strlen(tostring(chattype or "")) + strlen(tostring(destination or "")) + 40;
        self.avail = self.avail - size;
        self.nBypass = self.nBypass + size;
        return self.ORIG_SendChatMessage(text, chattype, language, destination);
end
function ChatThrottleLib.Hook_SendAddonMessage(prefix, text, chattype)
        local self = ChatThrottleLib;
        local size = strlen(tostring(text or "")) + strlen(tostring(chattype or "")) + strlen(tostring(prefix or "")) + 40;
        self.avail = self.avail - size;
        self.nBypass = self.nBypass + size;
        return self.ORIG_SendAddonMessage(prefix, text, chattype);
end



-----------------------------------------------------------------------
-- ChatThrottleLib:UpdateAvail
-- Update self.avail with how much bandwidth is currently available

function ChatThrottleLib:UpdateAvail()
        local now = GetTime();
        local newavail = MAX_CPS * (now-self.LastAvailUpdate);

        if(now - self.HardThrottlingBeginTime < 5) then
                -- First 5 seconds after startup/zoning: VERY hard clamping to avoid irritating the server rate limiter, it seems very cranky then
                self.avail = min(self.avail + (newavail*0.1), MAX_CPS*0.5);
        elseif(GetFramerate()<MIN_FPS) then             -- GetFrameRate call takes ~0.002 secs
                newavail = newavail * 0.5;
                self.avail = min(MAX_CPS, self.avail + newavail);
                self.bChoking = true;           -- just for stats
        else
                self.avail = min(BURST, self.avail + newavail);
                self.bChoking = false;
        end
        
        self.avail = max(self.avail, 0-(MAX_CPS*2));    -- Can go negative when someone is eating bandwidth past the lib. but we refuse to stay silent for more than 2 seconds; if they can do it, we can.
        self.LastAvailUpdate = now;
        
        return self.avail;
end


-----------------------------------------------------------------------
-- Despooling logic

function ChatThrottleLib:Despool(Prio)
        local ring = Prio.Ring;
        while(ring.pos and Prio.avail>ring.pos[1].nSize) do
                local msg = tremove(Prio.Ring.pos, 1);
                if(not Prio.Ring.pos[1]) then
                        local pipe = Prio.Ring.pos;
                        Prio.Ring:Remove(pipe);
                        Prio.ByName[pipe.name] = nil;
                        self.PipeBin:Put(pipe);
                else
                        Prio.Ring.pos = Prio.Ring.pos.next;
                end
                Prio.avail = Prio.avail - msg.nSize;
                msg.f(msg[1], msg[2], msg[3], msg[4]);
                Prio.nTotalSent = Prio.nTotalSent + msg.nSize;
                self.MsgBin:Put(msg);
        end
end


function ChatThrottleLib.OnEvent()
        -- v11: We know that the rate limiter is touchy after login. Assume that it's touch after zoning, too.
        self = ChatThrottleLib;
        if(event == "PLAYER_ENTERING_WORLD") then
                self.HardThrottlingBeginTime=GetTime(); -- Throttle hard for a few seconds after zoning
                self.avail = 0;
        end
end


function ChatThrottleLib.OnUpdate()
        self = ChatThrottleLib;
        
        self.OnUpdateDelay = self.OnUpdateDelay + arg1;
        if(self.OnUpdateDelay < 0.08) then
                return;
        end
        self.OnUpdateDelay = 0;
        
        self:UpdateAvail();
        
        if(self.avail<0) then
                return; -- argh. some bastard is spewing stuff past the lib. just bail early to save cpu.
        end

        -- See how many of or priorities have queued messages
        local n=0;
        for prioname,Prio in pairs(self.Prio) do
                if(Prio.Ring.pos or Prio.avail<0) then 
                        n=n+1; 
                end
        end
        
        -- Anything queued still?
        if(n<1) then
                -- Nope. Move spillover bandwidth to global availability gauge and clear self.bQueueing
                for prioname,Prio in pairs(self.Prio) do
                        self.avail = self.avail + Prio.avail;
                        Prio.avail = 0;
                end
                self.bQueueing = false;
                self.Frame:Hide();
                return;
        end
        
        -- There's stuff queued. Hand out available bandwidth to priorities as needed and despool their queues
        local avail= self.avail/n;
        self.avail = 0;
        
        for prioname,Prio in pairs(self.Prio) do
                if(Prio.Ring.pos or Prio.avail<0) then
                        Prio.avail = Prio.avail + avail;
                        if(Prio.Ring.pos and Prio.avail>Prio.Ring.pos[1].nSize) then
                                self:Despool(Prio);
                        end
                end
        end

        -- Expire recycled tables if needed     
        self.MsgBin:Tidy();
        self.PipeBin:Tidy();
end




-----------------------------------------------------------------------
-- Spooling logic


function ChatThrottleLib:Enqueue(prioname, pipename, msg)
        local Prio = self.Prio[prioname];
        local pipe = Prio.ByName[pipename];
        if(not pipe) then
                self.Frame:Show();
                pipe = self.PipeBin:Get();
                pipe.name = pipename;
                Prio.ByName[pipename] = pipe;
                Prio.Ring:Add(pipe);
        end
        
        tinsert(pipe, msg);
        
        self.bQueueing = true;
end



function ChatThrottleLib:SendChatMessage(prio, prefix,   text, chattype, language, destination)
        if(not (self and prio and text and self.Prio[prio] ) ) then
                error('Usage: ChatThrottleLib:SendChatMessage("{BULK||NORMAL||ALERT}", "prefix" or nil, "text"[, "chattype"[, "language"[, "destination"]]]', 2);
        end
        
        prefix = prefix or tostring(this);              -- each frame gets its own queue if prefix is not given
        
        local nSize = strlen(text) + MSG_OVERHEAD;
        
        -- Check if there's room in the global available bandwidth gauge to send directly
        if(not self.bQueueing and nSize < self:UpdateAvail()) then
                self.avail = self.avail - nSize;
                self.ORIG_SendChatMessage(text, chattype, language, destination);
                self.Prio[prio].nTotalSent = self.Prio[prio].nTotalSent + nSize;
                return;
        end
        
        -- Message needs to be queued
        msg=self.MsgBin:Get();
        msg.f=self.ORIG_SendChatMessage
        msg[1]=text;
        msg[2]=chattype or "SAY";
        msg[3]=language;
        msg[4]=destination;
        msg.n = 4
        msg.nSize = nSize;

        self:Enqueue(prio, format("%s/%s/%s", prefix, chattype, destination or ""), msg);
end


function ChatThrottleLib:SendAddonMessage(prio, prefix, text, chattype)
        if(not (self and prio and prefix and text and chattype and self.Prio[prio] ) ) then
                error('Usage: ChatThrottleLib:SendAddonMessage("{BULK||NORMAL||ALERT}", "prefix", "text", "chattype")', 0);
        end
        
        local nSize = strlen(prefix) + 1 + strlen(text) + MSG_OVERHEAD;
        
        -- Check if there's room in the global available bandwidth gauge to send directly
        if(not self.bQueueing and nSize < self:UpdateAvail()) then
                self.avail = self.avail - nSize;
                self.ORIG_SendAddonMessage(prefix, text, chattype);
                self.Prio[prio].nTotalSent = self.Prio[prio].nTotalSent + nSize;
                return;
        end
        
        -- Message needs to be queued
        msg=self.MsgBin:Get();
        msg.f=self.ORIG_SendAddonMessage;
        msg[1]=prefix;
        msg[2]=text;
        msg[3]=chattype;
        msg.n = 3
        msg.nSize = nSize;
        
        self:Enqueue(prio, format("%s/%s", prefix, chattype), msg);
end




-----------------------------------------------------------------------
-- Get the ball rolling!

ChatThrottleLib:Init();

--[[ WoWBench debugging snippet
if(WOWB_VER) then
        local function SayTimer()
                print("SAY: "..GetTime().." "..arg1);
        end
        ChatThrottleLib.Frame:SetScript("OnEvent", SayTimer);
        ChatThrottleLib.Frame:RegisterEvent("CHAT_MSG_SAY");
end
]]