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core/moduleapi.lua @ 6275:d891fa02e5e5
plugins/muc/muc.lib: Deliver declines to in-room jids correctly
author | daurnimator <quae@daurnimator.com> |
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date | Wed, 11 Jun 2014 14:59:59 -0400 |
parent | 6168:3942630b4e35 |
child | 6418:ae798314347c |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2012 Matthew Wild |
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3 -- Copyright (C) 2008-2012 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 config = require "core.configmanager"; |
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10 local modulemanager = require "modulemanager"; -- This is necessary to avoid require loops |
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11 local array = require "util.array"; |
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12 local set = require "util.set"; |
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13 local logger = require "util.logger"; |
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14 local pluginloader = require "util.pluginloader"; |
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15 local timer = require "util.timer"; |
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16 local resolve_relative_path = require"util.paths".resolve_relative_path; |
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17 |
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18 local t_insert, t_remove, t_concat = table.insert, table.remove, table.concat; |
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19 local error, setmetatable, type = error, setmetatable, type; |
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20 local ipairs, pairs, select = ipairs, pairs, select; |
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21 local tonumber, tostring = tonumber, tostring; |
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22 local pack = table.pack or function(...) return {n=select("#",...), ...}; end -- table.pack is only in 5.2 |
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23 local unpack = table.unpack or unpack; -- renamed in 5.2 |
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24 |
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25 local prosody = prosody; |
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26 local hosts = prosody.hosts; |
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27 |
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28 -- FIXME: This assert() is to try and catch an obscure bug (2013-04-05) |
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29 local core_post_stanza = assert(prosody.core_post_stanza, |
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30 "prosody.core_post_stanza is nil, please report this as a bug"); |
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31 |
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32 -- Registry of shared module data |
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33 local shared_data = setmetatable({}, { __mode = "v" }); |
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34 |
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35 local NULL = {}; |
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36 |
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37 local api = {}; |
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38 |
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39 -- Returns the name of the current module |
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40 function api:get_name() |
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41 return self.name; |
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42 end |
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43 |
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44 -- Returns the host that the current module is serving |
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45 function api:get_host() |
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46 return self.host; |
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47 end |
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48 |
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49 function api:get_host_type() |
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50 return (self.host == "*" and "global") or hosts[self.host].type or "local"; |
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51 end |
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52 |
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53 function api:set_global() |
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54 self.host = "*"; |
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55 -- Update the logger |
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56 local _log = logger.init("mod_"..self.name); |
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57 self.log = function (self, ...) return _log(...); end; |
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58 self._log = _log; |
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59 self.global = true; |
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60 end |
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61 |
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62 function api:add_feature(xmlns) |
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63 self:add_item("feature", xmlns); |
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64 end |
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65 function api:add_identity(category, type, name) |
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66 self:add_item("identity", {category = category, type = type, name = name}); |
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67 end |
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68 function api:add_extension(data) |
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69 self:add_item("extension", data); |
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70 end |
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71 function api:has_feature(xmlns) |
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72 for _, feature in ipairs(self:get_host_items("feature")) do |
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73 if feature == xmlns then return true; end |
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74 end |
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75 return false; |
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76 end |
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77 function api:has_identity(category, type, name) |
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78 for _, id in ipairs(self:get_host_items("identity")) do |
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79 if id.category == category and id.type == type and id.name == name then |
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80 return true; |
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81 end |
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82 end |
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83 return false; |
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84 end |
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85 |
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86 function api:fire_event(...) |
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87 return (hosts[self.host] or prosody).events.fire_event(...); |
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88 end |
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89 |
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90 function api:hook_object_event(object, event, handler, priority) |
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91 self.event_handlers:set(object, event, handler, true); |
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92 return object.add_handler(event, handler, priority); |
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93 end |
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94 |
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95 function api:unhook_object_event(object, event, handler) |
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96 return object.remove_handler(event, handler); |
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97 end |
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98 |
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99 function api:hook(event, handler, priority) |
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100 return self:hook_object_event((hosts[self.host] or prosody).events, event, handler, priority); |
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101 end |
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102 |
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103 function api:hook_global(event, handler, priority) |
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104 return self:hook_object_event(prosody.events, event, handler, priority); |
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105 end |
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106 |
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107 function api:hook_tag(xmlns, name, handler, priority) |
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108 if not handler and type(name) == "function" then |
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109 -- If only 2 options then they specified no xmlns |
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110 xmlns, name, handler, priority = nil, xmlns, name, handler; |
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111 elseif not (handler and name) then |
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112 self:log("warn", "Error: Insufficient parameters to module:hook_stanza()"); |
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113 return; |
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114 end |
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115 return self:hook("stanza/"..(xmlns and (xmlns..":") or "")..name, function (data) return handler(data.origin, data.stanza, data); end, priority); |
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116 end |
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117 api.hook_stanza = api.hook_tag; -- COMPAT w/pre-0.9 |
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118 |
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119 function api:unhook(event, handler) |
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120 return self:unhook_object_event((hosts[self.host] or prosody).events, event, handler); |
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121 end |
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122 |
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123 function api:require(lib) |
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124 local f, n = pluginloader.load_code(self.name, lib..".lib.lua", self.environment); |
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125 if not f then |
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126 f, n = pluginloader.load_code(lib, lib..".lib.lua", self.environment); |
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127 end |
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128 if not f then error("Failed to load plugin library '"..lib.."', error: "..n); end -- FIXME better error message |
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129 return f(); |
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130 end |
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131 |
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132 function api:depends(name) |
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133 if not self.dependencies then |
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134 self.dependencies = {}; |
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135 self:hook("module-reloaded", function (event) |
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136 if self.dependencies[event.module] and not self.reloading then |
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137 self:log("info", "Auto-reloading due to reload of %s:%s", event.host, event.module); |
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138 modulemanager.reload(self.host, self.name); |
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139 return; |
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140 end |
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141 end); |
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142 self:hook("module-unloaded", function (event) |
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143 if self.dependencies[event.module] then |
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144 self:log("info", "Auto-unloading due to unload of %s:%s", event.host, event.module); |
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145 modulemanager.unload(self.host, self.name); |
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146 end |
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147 end); |
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148 end |
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149 local mod = modulemanager.get_module(self.host, name) or modulemanager.get_module("*", name); |
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150 if mod and mod.module.host == "*" and self.host ~= "*" |
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151 and modulemanager.module_has_method(mod, "add_host") then |
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152 mod = nil; -- Target is a shared module, so we still want to load it on our host |
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153 end |
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154 if not mod then |
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155 local err; |
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156 mod, err = modulemanager.load(self.host, name); |
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157 if not mod then |
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158 return error(("Unable to load required module, mod_%s: %s"):format(name, ((err or "unknown error"):gsub("%-", " ")) )); |
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159 end |
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160 end |
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161 self.dependencies[name] = true; |
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162 return mod; |
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163 end |
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164 |
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165 -- Returns one or more shared tables at the specified virtual paths |
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166 -- Intentionally does not allow the table at a path to be _set_, it |
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167 -- is auto-created if it does not exist. |
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168 function api:shared(...) |
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169 if not self.shared_data then self.shared_data = {}; end |
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170 local paths = { n = select("#", ...), ... }; |
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171 local data_array = {}; |
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172 local default_path_components = { self.host, self.name }; |
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173 for i = 1, paths.n do |
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174 local path = paths[i]; |
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175 if path:sub(1,1) ~= "/" then -- Prepend default components |
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176 local n_components = select(2, path:gsub("/", "%1")); |
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177 path = (n_components<#default_path_components and "/" or "")..t_concat(default_path_components, "/", 1, #default_path_components-n_components).."/"..path; |
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178 end |
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179 local shared = shared_data[path]; |
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180 if not shared then |
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181 shared = {}; |
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182 if path:match("%-cache$") then |
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183 setmetatable(shared, { __mode = "kv" }); |
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184 end |
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185 shared_data[path] = shared; |
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186 end |
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187 t_insert(data_array, shared); |
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188 self.shared_data[path] = shared; |
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189 end |
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190 return unpack(data_array); |
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191 end |
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192 |
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193 function api:get_option(name, default_value) |
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194 local value = config.get(self.host, name); |
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195 if value == nil then |
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196 value = default_value; |
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197 end |
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198 return value; |
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199 end |
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200 |
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201 function api:get_option_string(name, default_value) |
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202 local value = self:get_option(name, default_value); |
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203 if type(value) == "table" then |
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204 if #value > 1 then |
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205 self:log("error", "Config option '%s' does not take a list, using just the first item", name); |
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206 end |
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207 value = value[1]; |
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208 end |
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209 if value == nil then |
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210 return nil; |
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211 end |
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212 return tostring(value); |
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213 end |
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214 |
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215 function api:get_option_number(name, ...) |
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216 local value = self:get_option(name, ...); |
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217 if type(value) == "table" then |
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218 if #value > 1 then |
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219 self:log("error", "Config option '%s' does not take a list, using just the first item", name); |
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220 end |
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221 value = value[1]; |
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222 end |
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223 local ret = tonumber(value); |
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224 if value ~= nil and ret == nil then |
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225 self:log("error", "Config option '%s' not understood, expecting a number", name); |
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226 end |
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227 return ret; |
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228 end |
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229 |
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230 function api:get_option_boolean(name, ...) |
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231 local value = self:get_option(name, ...); |
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232 if type(value) == "table" then |
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233 if #value > 1 then |
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234 self:log("error", "Config option '%s' does not take a list, using just the first item", name); |
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235 end |
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236 value = value[1]; |
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237 end |
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238 if value == nil then |
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239 return nil; |
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240 end |
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241 local ret = value == true or value == "true" or value == 1 or nil; |
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242 if ret == nil then |
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243 ret = (value == false or value == "false" or value == 0); |
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244 if ret then |
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245 ret = false; |
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246 else |
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247 ret = nil; |
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248 end |
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249 end |
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250 if ret == nil then |
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251 self:log("error", "Config option '%s' not understood, expecting true/false", name); |
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252 end |
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253 return ret; |
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254 end |
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255 |
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256 function api:get_option_array(name, ...) |
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257 local value = self:get_option(name, ...); |
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258 |
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259 if value == nil then |
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260 return nil; |
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261 end |
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262 |
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263 if type(value) ~= "table" then |
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264 return array{ value }; -- Assume any non-list is a single-item list |
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265 end |
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266 |
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267 return array():append(value); -- Clone |
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268 end |
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269 |
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270 function api:get_option_set(name, ...) |
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271 local value = self:get_option_array(name, ...); |
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272 |
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273 if value == nil then |
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274 return nil; |
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275 end |
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276 |
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277 return set.new(value); |
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278 end |
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279 |
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280 function api:get_option_inherited_set(name, ...) |
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281 local value = self:get_option_set(name, ...); |
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282 local global_value = self:context("*"):get_option_set(name, ...); |
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283 if not value then |
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284 return global_value; |
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285 elseif not global_value then |
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286 return value; |
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287 end |
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288 value:include(global_value); |
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289 return value; |
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290 end |
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291 |
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292 function api:context(host) |
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293 return setmetatable({host=host or "*"}, {__index=self,__newindex=self}); |
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294 end |
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295 |
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296 function api:add_item(key, value) |
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297 self.items = self.items or {}; |
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298 self.items[key] = self.items[key] or {}; |
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299 t_insert(self.items[key], value); |
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300 self:fire_event("item-added/"..key, {source = self, item = value}); |
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301 end |
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302 function api:remove_item(key, value) |
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303 local t = self.items and self.items[key] or NULL; |
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304 for i = #t,1,-1 do |
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305 if t[i] == value then |
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306 t_remove(self.items[key], i); |
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307 self:fire_event("item-removed/"..key, {source = self, item = value}); |
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308 return value; |
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309 end |
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310 end |
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311 end |
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312 |
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313 function api:get_host_items(key) |
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314 local result = modulemanager.get_items(key, self.host) or {}; |
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315 return result; |
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316 end |
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317 |
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318 function api:handle_items(type, added_cb, removed_cb, existing) |
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319 self:hook("item-added/"..type, added_cb); |
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320 self:hook("item-removed/"..type, removed_cb); |
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321 if existing ~= false then |
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322 for _, item in ipairs(self:get_host_items(type)) do |
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323 added_cb({ item = item }); |
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324 end |
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325 end |
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326 end |
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327 |
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328 function api:provides(name, item) |
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329 -- if not item then item = setmetatable({}, { __index = function(t,k) return rawget(self.environment, k); end }); end |
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330 if not item then |
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331 item = {} |
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332 for k,v in pairs(self.environment) do |
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333 if k ~= "module" then item[k] = v; end |
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334 end |
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335 end |
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336 if not item.name then |
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337 local item_name = self.name; |
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338 -- Strip a provider prefix to find the item name |
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339 -- (e.g. "auth_foo" -> "foo" for an auth provider) |
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340 if item_name:find(name.."_", 1, true) == 1 then |
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341 item_name = item_name:sub(#name+2); |
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342 end |
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343 item.name = item_name; |
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344 end |
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345 item._provided_by = self.name; |
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346 self:add_item(name.."-provider", item); |
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347 end |
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348 |
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349 function api:send(stanza) |
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350 return core_post_stanza(hosts[self.host], stanza); |
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351 end |
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352 |
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353 local timer_methods = { } |
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354 local timer_mt = { |
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355 __index = timer_methods; |
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356 } |
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357 function timer_methods:stop( ) |
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358 timer.stop(self.id); |
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359 end |
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360 timer_methods.disarm = timer_methods.stop |
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361 function timer_methods:reschedule(delay) |
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362 timer.reschedule(self.id, delay) |
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363 end |
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364 |
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365 local function timer_callback(now, id, t) |
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366 if t.module_env.loaded == false then return; end |
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367 return t.callback(now, unpack(t, 1, t.n)); |
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368 end |
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369 |
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370 function api:add_timer(delay, callback, ...) |
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371 local t = pack(...) |
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372 t.module_env = self; |
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373 t.callback = callback; |
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374 t.id = timer.add_task(delay, timer_callback, t); |
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375 return setmetatable(t, timer_mt); |
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376 end |
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377 |
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378 local path_sep = package.config:sub(1,1); |
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379 function api:get_directory() |
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380 return self.path and (self.path:gsub("%"..path_sep.."[^"..path_sep.."]*$", "")) or nil; |
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381 end |
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382 |
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383 function api:load_resource(path, mode) |
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384 path = resolve_relative_path(self:get_directory(), path); |
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385 return io.open(path, mode); |
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386 end |
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387 |
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388 function api:open_store(name, type) |
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389 return storagemanager.open(self.host, name or self.name, type); |
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390 end |
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391 |
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392 return api; |