File

+
−-- Prosody IM
+
−-- Copyright (C) 2008-2017 Matthew Wild
+
−-- Copyright (C) 2008-2017 Waqas Hussain
+
−-- Copyright (C) 2011-2017 Kim Alvefur
+
−-- Copyright (C) 2018 Emmanuel Gil Peyrot
+
−--
+
−-- This project is MIT/X11 licensed. Please see the
+
−-- COPYING file in the source package for more information.
+
−--
+
−-- XEP-0313: Message Archive Management for Prosody
+
−--
+
−
+
−local st = require"util.stanza";
+
−local jid_prep = require"util.jid".prep;
+
−local xmlns_mam = "urn:xmpp:mam:2";
+
−
+
−local default_attrs = {
+
−	always = true, [true] = "always",
+
−	never = false, [false] = "never",
+
−	roster = "roster",
+
−}
+
−
+
−local function tostanza(prefs)
+
−	local default = prefs[false];
+
−	default = default_attrs[default];
+
−	local prefstanza = st.stanza("prefs", { xmlns = xmlns_mam, default = default });
+
−	local always = st.stanza("always");
+
−	local never = st.stanza("never");
+
−	for jid, choice in pairs(prefs) do
+
−		if jid then
+
−			(choice and always or never):tag("jid"):text(jid):up();
+
−		end
+
−	end
+
−	prefstanza:add_child(always):add_child(never);
+
−	return prefstanza;
+
−end
+
−local function fromstanza(prefstanza)
+
−	local prefs = {};
+
−	local default = prefstanza.attr.default;
+
−	if default then
+
−		prefs[false] = default_attrs[default];
+
−	end
+
−
+
−	local always = prefstanza:get_child("always");
+
−	if always then
+
−		for rule in always:childtags("jid") do
+
−			local jid = jid_prep(rule:get_text());
+
−			if jid then
+
−				prefs[jid] = true;
+
−			end
+
−		end
+
−	end
+
−
+
−	local never = prefstanza:get_child("never");
+
−	if never then
+
−		for rule in never:childtags("jid") do
+
−			local jid = jid_prep(rule:get_text());
+
−			if jid then
+
−				prefs[jid] = false;
+
−			end
+
−		end
+
−	end
+
−
+
−	return prefs;
+
−end
+
−
+
−return {
+
−	tostanza = tostanza;
+
−	fromstanza = fromstanza;
+
−}