prosody
5758c39285ab
util/logger.lua

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util/logger.lua @ 884:5758c39285ab

util.logger: Small code tidying :)
author Matthew Wild <mwild1@gmail.com>
date Sat, 07 Mar 2009 19:40:00 +0000
parent 883:0112ae30f399
child 896:2c0b9e3c11c3
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1 -- Prosody IM v0.3
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 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 config = require "core.configmanager";
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17 local log_sources = config.get("*", "core", "log_sources");
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18
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19 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
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20 local do_pretty_printing = not os.getenv("WINDIR");
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21 local find = string.find;
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22 local ipairs = ipairs;
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23
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24 module "logger"
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25
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26 local logstyles = {};
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27
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28 --TODO: This should be done in config, but we don't have proper config yet
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29 if do_pretty_printing then
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30 logstyles["info"] = getstyle("bold");
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31 logstyles["warn"] = getstyle("bold", "yellow");
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32 logstyles["error"] = getstyle("bold", "red");
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33 end
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34
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35 local sourcewidth = 20;
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36
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37 local outfunction = nil;
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38
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39 function init(name)
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40 if log_sources then
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41 local log_this = false;
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42 for _, source in ipairs(log_sources) do
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43 if find(name, source) then
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44 log_this = true;
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45 break;
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46 end
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47 end
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49 if not log_this then return function () end end
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50 end
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51
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52 --name = nil; -- While this line is not commented, will automatically fill in file/line number info
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53 local namelen = #name;
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54 return function (level, message, ...)
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55 if outfunction then return outfunction(name, level, message, ...); end
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56
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57 sourcewidth = math_max(#name+2, sourcewidth);
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58 if ... then
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59 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n");
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60 else
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61 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n");
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62 end
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63 end
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64 end
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65
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66 function setwriter(f)
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67 local old_func = outfunction;
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68 if not f then outfunction = nil; return true, old_func; end
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69 local ok, ret = pcall(f, "logger", "info", "Switched logging output successfully");
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70 if ok then
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71 outfunction = f;
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72 ret = old_func;
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73 end
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74 return ok, ret;
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75 end
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76
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77 return _M;