annotate mod_mam/rsm.lib.lua @ 4047:36b6e3e3f9e2

mod_conversejs: Disable automatic BOSH/WS endpoint discovery Converse.js 7.0 will enable this by default, but when using this module the BOSH and WebSocket endpoints are provided in the generated HTML, so automatic discovery is not needed and unlikely to work without an additional module.
author Kim Alvefur <zash@zash.se>
date Thu, 18 Jun 2020 15:24:34 +0200
parents 57ee26681561
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local stanza = require"util.stanza".stanza;
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2 local tostring, tonumber = tostring, tonumber;
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3 local type = type;
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4 local pairs = pairs;
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5
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6 local xmlns_rsm = 'http://jabber.org/protocol/rsm';
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7
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8 local element_parsers = {};
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9
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10 do
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11 local parsers = element_parsers;
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12 local function xs_int(st)
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13 return tonumber((st:get_text()));
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14 end
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15 local function xs_string(st)
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16 return st:get_text();
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17 end
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18
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19 parsers.after = xs_string;
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20 parsers.before = function(st)
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21 local text = st:get_text();
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22 return text == "" or text;
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23 end;
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24 parsers.max = xs_int;
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25 parsers.index = xs_int;
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26
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27 parsers.first = function(st)
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28 return { index = tonumber(st.attr.index); st:get_text() };
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29 end;
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30 parsers.last = xs_string;
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31 parsers.count = xs_int;
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32 end
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33
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34 local element_generators = setmetatable({
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35 first = function(st, data)
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36 if type(data) == "table" then
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37 st:tag("first", { index = data.index }):text(data[1]):up();
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38 else
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39 st:tag("first"):text(tostring(data)):up();
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40 end
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41 end;
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42 before = function(st, data)
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43 if data == true then
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44 st:tag("before"):up();
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45 else
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46 st:tag("before"):text(tostring(data)):up();
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47 end
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48 end
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49 }, {
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50 __index = function(_, name)
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51 return function(st, data)
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52 st:tag(name):text(tostring(data)):up();
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53 end
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54 end;
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55 });
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56
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57
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58 local function parse(set)
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59 local rs = {};
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60 for tag in set:childtags() do
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61 local name = tag.name;
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62 local parser = name and element_parsers[name];
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63 if parser then
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64 rs[name] = parser(tag);
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65 end
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66 end
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67 return rs;
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68 end
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69
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70 local function generate(t)
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71 local st = stanza("set", { xmlns = xmlns_rsm });
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72 for k,v in pairs(t) do
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73 if element_parsers[k] then
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74 element_generators[k](st, v);
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75 end
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76 end
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77 return st;
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78 end
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79
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80 local function get(st)
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81 local set = st:get_child("set", xmlns_rsm);
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82 if set and #set.tags > 0 then
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83 return parse(set);
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84 end
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85 end
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86
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87 return { parse = parse, generate = generate, get = get };