prosody
73ecfe811526
util/rsm.lua

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util/rsm.lua @ 12243:73ecfe811526

util.startup: Teach prosodyctl to be --quiet as complement to --verbose Original motivation was tiresome warnings about Lua 5.4 not being supported yet. Can still be handy to tweak log level, e.g. to prevent logging to interfere with command output.
author Kim Alvefur <zash@zash.se>
date Sun, 28 Nov 2021 23:07:35 +0100
parent 11428:d91def9fcfdd
child 12975:d10957394a3c
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2017 Matthew Wild
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3 -- Copyright (C) 2008-2017 Waqas Hussain
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4 -- Copyright (C) 2011-2017 Kim Alvefur
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9 -- XEP-0313: Message Archive Management for Prosody
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10 --
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11
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12 local stanza = require"util.stanza".stanza;
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13 local tonumber = tonumber;
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14 local s_format = string.format;
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15 local type = type;
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16 local pairs = pairs;
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17
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18 local function inttostr(n)
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19 return s_format("%d", n);
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20 end
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21
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22 local xmlns_rsm = 'http://jabber.org/protocol/rsm';
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23
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24 local element_parsers = {};
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25
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26 do
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27 local parsers = element_parsers;
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28 local function xs_int(st)
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29 return tonumber((st:get_text()));
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30 end
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31 local function xs_string(st)
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32 return st:get_text();
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33 end
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34
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35 parsers.after = xs_string;
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36 parsers.before = function(st)
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37 local text = st:get_text();
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38 return text == "" or text;
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39 end;
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40 parsers.max = xs_int;
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41 parsers.index = xs_int;
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42
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43 parsers.first = function(st)
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44 return { index = tonumber(st.attr.index); st:get_text() };
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45 end;
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46 parsers.last = xs_string;
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47 parsers.count = xs_int;
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48 end
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49
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50 local element_generators = setmetatable({
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51 first = function(st, data)
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52 if type(data) == "table" then
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53 st:tag("first", { index = inttostr(data.index) }):text(data[1]):up();
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54 else
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55 st:text_tag("first", data);
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56 end
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57 end;
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58 before = function(st, data)
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59 if data == true then
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60 st:tag("before"):up();
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61 else
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62 st:text_tag("before", data);
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63 end
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64 end;
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65 max = function (st, data)
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66 st:text_tag("max", inttostr(data));
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67 end;
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68 index = function (st, data)
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69 st:text_tag("index", inttostr(data));
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70 end;
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71 count = function (st, data)
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72 st:text_tag("count", inttostr(data));
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73 end;
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74 }, {
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75 __index = function(_, name)
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76 return function(st, data)
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77 st:text_tag(name, data);
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78 end
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79 end;
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80 });
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81
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82
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83 local function parse(set)
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84 local rs = {};
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85 for tag in set:childtags() do
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86 local name = tag.name;
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87 local parser = name and element_parsers[name];
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88 if parser then
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89 rs[name] = parser(tag);
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90 end
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91 end
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92 return rs;
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93 end
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94
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95 local function generate(t)
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96 local st = stanza("set", { xmlns = xmlns_rsm });
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97 for k,v in pairs(t) do
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98 if element_parsers[k] then
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99 element_generators[k](st, v);
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100 end
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101 end
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102 return st;
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103 end
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104
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105 local function get(st)
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106 local set = st:get_child("set", xmlns_rsm);
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107 if set and #set.tags > 0 then
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108 return parse(set);
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109 end
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110 end
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111
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112 return { parse = parse, generate = generate, get = get };