prosody
b1885732e979
util/logger.lua

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util/logger.lua @ 758:b1885732e979

GPL->MIT!
author Matthew Wild <mwild1@gmail.com>
date Fri, 30 Jan 2009 17:22:56 +0000
parent 716:d61eabc678a6
child 759:5cccfb5da6cb
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1 -- Prosody IM v0.2
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2 -- Copyright (C) 2008 Matthew Wild
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3 -- Copyright (C) 2008 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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8
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9 local format, rep = string.format, string.rep;
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10 local io_write = io.write;
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11 local pcall = pcall;
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12 local debug = debug;
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13 local tostring = tostring;
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14 local math_max = math.max;
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15
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16 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
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17 local do_pretty_printing = not os.getenv("WINDIR");
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18
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19 module "logger"
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20
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21 local logstyles = {};
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22
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23 --TODO: This should be done in config, but we don't have proper config yet
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24 if do_pretty_printing then
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25 logstyles["info"] = getstyle("bold");
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26 logstyles["warn"] = getstyle("bold", "yellow");
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27 logstyles["error"] = getstyle("bold", "red");
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28 end
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30 local sourcewidth = 20;
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31
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32 local outfunction = nil;
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33
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34 function init(name)
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35 --name = nil; -- While this line is not commented, will automatically fill in file/line number info
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36 sourcewidth = math_max(#name+2, sourcewidth);
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37 local namelen = #name;
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38 return function (level, message, ...)
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39 if not name then
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40 local inf = debug.getinfo(3, 'Snl');
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41 level = level .. ","..tostring(inf.short_src):match("[^/]*$")..":"..inf.currentline;
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42 end
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43
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44 if outfunction then return outfunction(name, level, message, ...); end
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45
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46 if ... then
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47 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n");
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48 else
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49 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n");
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50 end
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51 end
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52 end
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53
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54 function setwriter(f)
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55 local old_func = outfunction;
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56 if not f then outfunction = nil; return true, old_func; end
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57 local ok, ret = pcall(f, "logger", "info", "Switched logging output successfully");
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58 if ok then
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59 outfunction = f;
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60 ret = old_func;
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61 end
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62 return ok, ret;
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63 end
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64
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65 return _M;