File

plugins/muc/description.lib.lua @ 10571:cfeb0077c9e9

net.server_epoll: Avoid concatenating buffer with single item Saves creating a string that'll be identical to buffer[1] anyways, as well as a C function call. Depending on Lua version and length of the string, this could be reusing an interned string, but a longer one would probably be duplicated for no reason. Having exactly one item in the buffer seems like it would be fairly common, but I have not done an extensive study. If opportunistic writes are enabled then it will be even more likely. This special case could be optimized like this in table.concat but it does not look like it is.
author Kim Alvefur <zash@zash.se>
date Sat, 28 Dec 2019 06:18:58 +0100
parent 9034:1c709e3d2e5e
line wrap: on
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-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
-- Copyright (C) 2014 Daurnimator
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

local function get_description(room)
	return room._data.description;
end

local function set_description(room, description)
	if description == "" then description = nil; end
	if get_description(room) == description then return false; end
	room._data.description = description;
	return true;
end

local function add_disco_form(event)
	table.insert(event.form, {
		name = "muc#roominfo_description";
		label = "Description";
		value = "";
	});
	event.formdata["muc#roominfo_description"] = get_description(event.room);
end

local function add_form_option(event)
	table.insert(event.form, {
		name = "muc#roomconfig_roomdesc";
		type = "text-single";
		label = "Description";
		desc = "A brief description of the room";
		value = get_description(event.room) or "";
	});
end

module:hook("muc-disco#info", add_disco_form);
module:hook("muc-config-form", add_form_option, 100-2);

module:hook("muc-config-submitted/muc#roomconfig_roomdesc", function(event)
	if set_description(event.room, event.value) then
		event.status_codes["104"] = true;
	end
end);

return {
	get = get_description;
	set = set_description;
};