prosody
9a12fc2baa37
util/helpers.lua

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util/helpers.lua @ 4211:9a12fc2baa37

tools/migration/*.lua: Rename config to migrator.cfg.lua, add error handling for config and command-line parameters
author Matthew Wild <mwild1@gmail.com>
date Fri, 25 Feb 2011 03:32:44 +0000
parent 2923:b7049746bd29
child 4536:285450536ec0
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1964
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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9 module("helpers", package.seeall);
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11 -- Helper functions for debugging
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13 local log = require "util.logger".init("util.debug");
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15 function log_events(events, name, logger)
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16 local f = events.fire_event;
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17 if not f then
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18 error("Object does not appear to be a util.events object");
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19 end
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20 logger = logger or log;
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21 name = name or tostring(events);
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22 function events.fire_event(event, ...)
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23 logger("debug", "%s firing event: %s", name, event);
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24 return f(event, ...);
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25 end
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26 events[events.fire_event] = f;
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27 return events;
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28 end
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30 function revert_log_events(events)
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31 events.fire_event, events[events.fire_event] = events[events.fire_event], nil; -- :)
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32 end
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33
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34 function get_upvalue(f, get_name)
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35 local i, name, value = 0;
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36 repeat
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37 i = i + 1;
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38 name, value = debug.getupvalue(f, i);
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39 until name == get_name or name == nil;
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40 return value;
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41 end
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42
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43 return _M;