# HG changeset patch
# User Waqas Hussain <waqas20@gmail.com>
# Date 1231868227 -18000
# Node ID 56f6c115bc694c9096d41719566ab068f4983629
# Parent  8bb83563cb21d5e0d8e5d477cd297aaab35e53e3
modulemanager: Added reload support, with callbacks for saving and restoring state

diff -r 8bb83563cb21 -r 56f6c115bc69 core/modulemanager.lua
--- a/core/modulemanager.lua	Tue Jan 13 15:29:00 2009 +0000
+++ b/core/modulemanager.lua	Tue Jan 13 22:37:07 2009 +0500
@@ -140,8 +140,8 @@
 	local mod = modulemap[host] and modulemap[host][name];
 	if not mod then return nil, "module-not-loaded"; end
 	
-	if type(rawget(mod, "unload")) == "function" then
-		local ok, err = pcall(rawget(mod, "unload"), ...)
+	if type(mod.module.unload) == "function" then
+		local ok, err = pcall(mod.module.unload, ...)
 		if (not ok) and err then
 			log("warn", "Non-fatal error unloading module '%s' from '%s': %s", name, host, err);
 		end
@@ -160,6 +160,33 @@
 	return true;
 end
 
+function reload(host, name, ...)
+	local mod = modulemap[host] and modulemap[host][name];
+	if not mod then return nil, "module-not-loaded"; end
+
+	local saved;
+	if type(mod.module.save) == "function" then
+		local ok, err = pcall(mod.module.save)
+		if (not ok) and err then
+			log("warn", "Non-fatal error unloading module '%s' from '%s': %s", name, host, err);
+		else
+			saved = err;
+		end
+	end
+
+	unload(host, name, ...);
+	if load(host, name, ...) then
+		mod = modulemap[host] and modulemap[host][name];
+		if type(mod.module.restore) == "function" then
+			local ok, err = pcall(mod.module.restore, saved or {})
+			if (not ok) and err then
+				log("warn", "Non-fatal error unloading module '%s' from '%s': %s", name, host, err);
+			end
+		end
+		return true;
+	end
+end
+
 function handle_stanza(host, origin, stanza)
 	local name, xmlns, origin_type = stanza.name, stanza.attr.xmlns, origin.type;
 	if name == "iq" and xmlns == "jabber:client" then