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annotate mod_mam/mamprefsxml.lib.lua @ 2061:b84284144e21

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mod_storage_appendmap: Experimental storage module optimized for map stores
author Kim Alvefur <zash@zash.se>
date Sun, 06 Mar 2016 17:03:19 +0100
parents dfa9c0cdd960
children 5941aac79f06
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1 -- XEP-0313: Message Archive Management for Prosody
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2 -- Copyright (C) 2011-2013 Kim Alvefur
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3 --
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4 -- This file is MIT/X11 licensed.
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5
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6 local st = require"util.stanza";
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7 local xmlns_mam = "urn:xmpp:mam:0";
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8
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9 local default_attrs = {
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10 always = true, [true] = "always",
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11 never = false, [false] = "never",
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12 roster = "roster",
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13 }
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14
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15 local function tostanza(prefs)
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16 local default = prefs[false];
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17 default = default_attrs[default];
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18 local prefstanza = st.stanza("prefs", { xmlns = xmlns_mam, default = default });
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19 local always = st.stanza("always");
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20 local never = st.stanza("never");
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21 for jid, choice in pairs(prefs) do
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22 if jid then
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23 (choice and always or never):tag("jid"):text(jid):up();
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24 end
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25 end
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26 prefstanza:add_child(always):add_child(never);
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27 return prefstanza;
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28 end
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29 local function fromstanza(prefstanza)
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30 local prefs = {};
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31 local default = prefstanza.attr.default;
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32 if default then
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33 prefs[false] = default_attrs[default];
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34 end
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36 local always = prefstanza:get_child("always");
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37 if always then
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38 for rule in always:childtags("jid") do
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39 local jid = rule:get_text();
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40 prefs[jid] = true;
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41 end
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42 end
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43
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44 local never = prefstanza:get_child("never");
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45 if never then
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46 for rule in never:childtags("jid") do
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47 local jid = rule:get_text();
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48 prefs[jid] = false;
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49 end
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50 end
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51
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52 return prefs;
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53 end
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54
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55 return {
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56 tostanza = tostanza;
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57 fromstanza = fromstanza;
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58 }