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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 | -- |
758 | 5 | -- This project is MIT/X11 licensed. Please see the |
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 pcall = pcall; |
262 | 10 | |
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11 | local find = string.find; |
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12 | local ipairs, pairs, setmetatable = ipairs, pairs, setmetatable; |
262 | 13 | |
30 | 14 | module "logger" |
15 | ||
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16 | local name_sinks, level_sinks = {}, {}; |
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17 | local name_patterns = {}; |
262 | 18 | |
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19 | local make_logger; |
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20 | |
30 | 21 | function init(name) |
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22 | local log_debug = make_logger(name, "debug"); |
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23 | local log_info = make_logger(name, "info"); |
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24 | local log_warn = make_logger(name, "warn"); |
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25 | local log_error = make_logger(name, "error"); |
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26 | |
147 | 27 | --name = nil; -- While this line is not commented, will automatically fill in file/line number info |
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28 | local namelen = #name; |
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29 | return function (level, message, ...) |
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30 | if level == "debug" then |
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31 | return log_debug(message, ...); |
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32 | elseif level == "info" then |
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33 | return log_info(message, ...); |
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34 | elseif level == "warn" then |
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35 | return log_warn(message, ...); |
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36 | elseif level == "error" then |
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37 | return log_error(message, ...); |
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38 | end |
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39 | end |
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40 | end |
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41 | |
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42 | function make_logger(source_name, level) |
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43 | local level_handlers = level_sinks[level]; |
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44 | if not level_handlers then |
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45 | level_handlers = {}; |
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46 | level_sinks[level] = level_handlers; |
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47 | end |
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48 | |
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49 | local source_handlers = name_sinks[source_name]; |
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50 | |
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51 | local logger = function (message, ...) |
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52 | if source_handlers then |
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53 | for i = 1,#source_handlers do |
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54 | if source_handlers[i](source_name, level, message, ...) == false then |
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55 | return; |
30 | 56 | end |
57 | end | |
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58 | end |
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59 | |
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60 | for i = 1,#level_handlers do |
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61 | level_handlers[i](source_name, level, message, ...); |
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62 | end |
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63 | end |
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64 | |
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65 | return logger; |
30 | 66 | end |
67 | ||
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68 | function reset() |
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69 | for k in pairs(name_sinks) do name_sinks[k] = nil; end |
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70 | for level, handler_list in pairs(level_sinks) do |
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71 | -- Clear all handlers for this level |
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72 | for i = 1, #handler_list do |
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73 | handler_list[i] = nil; |
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74 | end |
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75 | end |
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76 | for k in pairs(name_patterns) do name_patterns[k] = nil; end |
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77 | end |
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78 | |
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79 | function add_level_sink(level, sink_function) |
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80 | if not level_sinks[level] then |
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81 | level_sinks[level] = { sink_function }; |
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82 | else |
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83 | level_sinks[level][#level_sinks[level] + 1 ] = sink_function; |
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84 | end |
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85 | end |
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86 | |
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87 | function add_name_sink(name, sink_function, exclusive) |
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88 | if not name_sinks[name] then |
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89 | name_sinks[name] = { sink_function }; |
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90 | else |
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91 | name_sinks[name][#name_sinks[name] + 1] = sink_function; |
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92 | end |
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93 | end |
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94 | |
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95 | function add_name_pattern_sink(name_pattern, sink_function, exclusive) |
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96 | if not name_patterns[name_pattern] then |
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97 | name_patterns[name_pattern] = { sink_function }; |
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98 | else |
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99 | name_patterns[name_pattern][#name_patterns[name_pattern] + 1] = sink_function; |
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100 | end |
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101 | end |
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102 | |
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103 | _M.new = make_logger; |
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104 | |
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105 | return _M; |