From 457ddca9ee0224e73f0fae9d79f2da28e8ba0597 Mon Sep 17 00:00:00 2001
From: Thomas Harning Jr <harningt@gmail.com>
Date: Fri, 31 Aug 2007 23:47:55 -0400
Subject: Moved lua source into its own directory.

---
 lua/luaevent.lua | 157 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 lua/luaevent.lua

(limited to 'lua')

diff --git a/lua/luaevent.lua b/lua/luaevent.lua
new file mode 100644
index 0000000..ec9bc15
--- /dev/null
+++ b/lua/luaevent.lua
@@ -0,0 +1,157 @@
+--[[
+	LuaEvent - Copyright (C) 2007 Thomas Harning <harningt@gmail.com>
+	Licensed as LGPL - See doc/COPYING for details.
+]]
+module("luaevent", package.seeall)
+require("luaevent.core")
+
+local EV_READ = luaevent.core.EV_READ
+local EV_WRITE = luaevent.core.EV_WRITE
+local fair = false -- Not recommended for most cases...
+local base = luaevent.core.new()
+local sockMap = setmetatable({}, {'__mode', 'kv'})
+local function addevent(sock, ...)
+	local item = base:addevent(sock, ...)
+	if not item then print("FAILED TO SETUP ITEM") return item end
+	local fd = sock:getfd()
+	sockMap[item] = fd
+	print("SETUP ITEM FOR: ", fd)
+	if not hookedObjectMt then
+		hookedObjectMt = true
+		--[[
+		local mt = debug.getmetatable(item)
+		local oldGC = mt.__gc
+		mt.__gc = function(...)
+			print("RELEASING ITEM FOR: ", sockMap[(...)])
+			return oldGC(...)
+		end]]
+	end
+	return item
+end
+-- Weak keys.. the keys are the client sockets
+local clientTable = setmetatable({}, {'__mode', 'kv'})
+
+local function getWrapper()
+	local running = coroutine.running()
+	return function(...)
+		if coroutine.running() == running then return end
+		return select(2, coroutine.resume(running, ...))
+	end
+end
+
+function send(sock, data, start, stop)
+	local s, err
+	local from = start or 1
+	local sent = 0
+	repeat
+		from = from + sent
+		s, err, sent = sock:send(data, from, stop)
+		-- Add extra coro swap for fairness
+		-- CURRENTLY DISABLED FOR TESTING......
+		if fair and math.random(100) > 90 then
+			if not clientTable[sock] then clientTable[sock] = addevent(sock, EV_WRITE, getWrapper()) end
+			coroutine.yield(EV_WRITE)
+		end
+		if s or err ~= "timeout" then return s, err, sent end
+		if not clientTable[sock] then clientTable[sock] = addevent(sock, EV_WRITE, getWrapper()) end
+		coroutine.yield(EV_WRITE)
+	until false
+end
+function receive(sock, pattern, part)
+	local s, err
+	pattern = pattern or '*l'
+	repeat
+		s, err, part = sock:receive(pattern, part)
+		if s or err ~= "timeout" then return s, err, part end
+		if not clientTable[sock] then clientTable[sock] = addevent(sock, EV_READ, getWrapper()) end
+		coroutine.yield(EV_READ)
+	until false
+end
+-- same as above but with special treatment when reading chunks,
+-- unblocks on any data received.
+function receivePartial(client, pattern)
+	local s, err, part
+	pattern = pattern or "*l"
+	repeat
+	s, err, part = client:receive(pattern)
+	if s or ( (type(pattern)=="number") and part~="" and part ~=nil ) or 
+		err ~= "timeout" then return s, err, part end
+		if not clientTable[sock] then clientTable[sock] = addevent(sock, EV_READ, getWrapper()) end
+		coroutine.yield(EV_READ)
+	until false
+end
+function connect(sock, ...)
+	sock:settimeout(0)
+	local ret, err = sock:connect(...)
+	if ret or err ~= "timeout" then return ret, err end
+	if not clientTable[sock] then clientTable[sock] = addevent(sock, EV_WRITE, getWrapper()) end
+	coroutine.yield(EV_WRITE)
+	ret, err = sock:connect(...)
+	if err == "already connected" then
+		return 1
+	end
+	return ret, err
+end
+-- Deprecated..
+function flush(sock)
+end
+local function clientCoroutine(sock, handler)
+	-- Figure out what to do ......
+	return handler(sock)
+end
+local function handleClient(co, client, handler)
+	local ok, res, event = coroutine.resume(co, client, handler)
+end
+local function serverCoroutine(sock, callback)
+	local listenItem = addevent(sock, EV_READ, getWrapper())
+	repeat
+		local event = coroutine.yield(EV_READ)
+		-- Get new socket
+		local client = sock:accept()
+		if client then
+			client:settimeout(0)
+			local co = coroutine.create(clientCoroutine)
+			handleClient(co, client, callback)
+		end
+	until false
+end
+function addserver(sock, callback)
+	local coro = coroutine.create(serverCoroutine)
+	assert(coroutine.resume(coro, sock, callback))
+end
+function addthread(func, ...)
+	return coroutine.resume(coroutine.create(func), ...)
+end
+local _skt_mt = {__index = {
+	connect = function(self, ...)
+		return connect(self.socket, ...)
+	end,
+	send = function (self, data)
+		return send(self.socket, data)
+	end,
+	
+	receive = function (self, pattern)
+		if (self.timeout==0) then
+  			return receivePartial(self.socket, pattern)
+  		end
+		return receive(self.socket, pattern)
+	end,
+	
+	flush = function (self)
+		return flush(self.socket)
+	end,
+	
+	settimeout = function (self,time)
+		self.timeout=time
+		return
+	end,
+	
+	close = function(self)
+		clientTable[self.socket]:close()
+		self.socket:close()
+	end
+}}
+function wrap(sock)
+	return setmetatable({socket = sock}, _skt_mt)
+end
+loop = function(...) base:loop(...) end
\ No newline at end of file
-- 
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