author | Matthew Wild <mwild1@gmail.com> |
Mon, 16 Sep 2013 18:41:09 +0100 | |
changeset 5825 | ac5e05ffc921 |
parent 5776 | bd0ff8ae98a8 |
child 5899 | 26f54b462601 |
child 6165 | 6a184b16b717 |
permissions | -rw-r--r-- |
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-- Prosody IM |
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-- Copyright (C) 2008-2012 Matthew Wild |
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-- Copyright (C) 2008-2012 Waqas Hussain |
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-- |
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-- This project is MIT/X11 licensed. Please see the |
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-- COPYING file in the source package for more information. |
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-- |
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local config = require "core.configmanager"; |
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local modulemanager = require "modulemanager"; -- This is necessary to avoid require loops |
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local array = require "util.array"; |
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local set = require "util.set"; |
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local logger = require "util.logger"; |
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local pluginloader = require "util.pluginloader"; |
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local timer = require "util.timer"; |
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local t_insert, t_remove, t_concat = table.insert, table.remove, table.concat; |
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local error, setmetatable, type = error, setmetatable, type; |
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local ipairs, pairs, select, unpack = ipairs, pairs, select, unpack; |
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local tonumber, tostring = tonumber, tostring; |
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local prosody = prosody; |
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local hosts = prosody.hosts; |
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-- FIXME: This assert() is to try and catch an obscure bug (2013-04-05) |
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local core_post_stanza = assert(prosody.core_post_stanza, |
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"prosody.core_post_stanza is nil, please report this as a bug"); |
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-- Registry of shared module data |
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local shared_data = setmetatable({}, { __mode = "v" }); |
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local NULL = {}; |
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local api = {}; |
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-- Returns the name of the current module |
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function api:get_name() |
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return self.name; |
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end |
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-- Returns the host that the current module is serving |
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function api:get_host() |
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return self.host; |
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end |
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function api:get_host_type() |
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return (self.host == "*" and "global") or hosts[self.host].type or "local"; |
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end |
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function api:set_global() |
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self.host = "*"; |
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-- Update the logger |
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local _log = logger.init("mod_"..self.name); |
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self.log = function (self, ...) return _log(...); end; |
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self._log = _log; |
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self.global = true; |
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end |
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function api:add_feature(xmlns) |
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self:add_item("feature", xmlns); |
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end |
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function api:add_identity(category, type, name) |
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self:add_item("identity", {category = category, type = type, name = name}); |
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end |
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function api:add_extension(data) |
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self:add_item("extension", data); |
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end |
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function api:has_feature(xmlns) |
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for _, feature in ipairs(self:get_host_items("feature")) do |
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if feature == xmlns then return true; end |
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end |
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return false; |
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end |
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function api:has_identity(category, type, name) |
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for _, id in ipairs(self:get_host_items("identity")) do |
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if id.category == category and id.type == type and id.name == name then |
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return true; |
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end |
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end |
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return false; |
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end |
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function api:fire_event(...) |
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return (hosts[self.host] or prosody).events.fire_event(...); |
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end |
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function api:hook_object_event(object, event, handler, priority) |
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self.event_handlers:set(object, event, handler, true); |
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return object.add_handler(event, handler, priority); |
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end |
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function api:unhook_object_event(object, event, handler) |
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return object.remove_handler(event, handler); |
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end |
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function api:hook(event, handler, priority) |
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return self:hook_object_event((hosts[self.host] or prosody).events, event, handler, priority); |
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end |
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function api:hook_global(event, handler, priority) |
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101 |
return self:hook_object_event(prosody.events, event, handler, priority); |
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102 |
end |
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103 |
|
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104 |
function api:hook_tag(xmlns, name, handler, priority) |
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105 |
if not handler and type(name) == "function" then |
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106 |
-- If only 2 options then they specified no xmlns |
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107 |
xmlns, name, handler, priority = nil, xmlns, name, handler; |
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|
108 |
elseif not (handler and name) then |
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|
109 |
self:log("warn", "Error: Insufficient parameters to module:hook_stanza()"); |
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110 |
return; |
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111 |
end |
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112 |
return self:hook("stanza/"..(xmlns and (xmlns..":") or "")..name, function (data) return handler(data.origin, data.stanza, data); end, priority); |
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113 |
end |
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114 |
api.hook_stanza = api.hook_tag; -- COMPAT w/pre-0.9 |
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115 |
|
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116 |
function api:unhook(event, handler) |
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117 |
return self:unhook_object_event((hosts[self.host] or prosody).events, event, handler); |
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118 |
end |
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119 |
|
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120 |
function api:require(lib) |
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121 |
local f, n = pluginloader.load_code(self.name, lib..".lib.lua", self.environment); |
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122 |
if not f then |
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123 |
f, n = pluginloader.load_code(lib, lib..".lib.lua", self.environment); |
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124 |
end |
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125 |
if not f then error("Failed to load plugin library '"..lib.."', error: "..n); end -- FIXME better error message |
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126 |
return f(); |
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127 |
end |
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128 |
|
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129 |
function api:depends(name) |
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130 |
if not self.dependencies then |
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131 |
self.dependencies = {}; |
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132 |
self:hook("module-reloaded", function (event) |
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|
133 |
if self.dependencies[event.module] and not self.reloading then |
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|
134 |
self:log("info", "Auto-reloading due to reload of %s:%s", event.host, event.module); |
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|
135 |
modulemanager.reload(self.host, self.name); |
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136 |
return; |
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|
137 |
end |
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|
138 |
end); |
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|
139 |
self:hook("module-unloaded", function (event) |
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|
140 |
if self.dependencies[event.module] then |
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|
141 |
self:log("info", "Auto-unloading due to unload of %s:%s", event.host, event.module); |
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|
142 |
modulemanager.unload(self.host, self.name); |
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|
143 |
end |
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144 |
end); |
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|
145 |
end |
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|
146 |
local mod = modulemanager.get_module(self.host, name) or modulemanager.get_module("*", name); |
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147 |
if mod and mod.module.host == "*" and self.host ~= "*" |
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148 |
and modulemanager.module_has_method(mod, "add_host") then |
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|
149 |
mod = nil; -- Target is a shared module, so we still want to load it on our host |
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150 |
end |
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151 |
if not mod then |
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152 |
local err; |
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153 |
mod, err = modulemanager.load(self.host, name); |
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154 |
if not mod then |
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155 |
return error(("Unable to load required module, mod_%s: %s"):format(name, ((err or "unknown error"):gsub("%-", " ")) )); |
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|
156 |
end |
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|
157 |
end |
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|
158 |
self.dependencies[name] = true; |
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|
159 |
return mod; |
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|
160 |
end |
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|
161 |
|
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|
162 |
-- Returns one or more shared tables at the specified virtual paths |
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|
163 |
-- Intentionally does not allow the table at a path to be _set_, it |
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164 |
-- is auto-created if it does not exist. |
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|
165 |
function api:shared(...) |
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|
166 |
if not self.shared_data then self.shared_data = {}; end |
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|
167 |
local paths = { n = select("#", ...), ... }; |
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|
168 |
local data_array = {}; |
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|
169 |
local default_path_components = { self.host, self.name }; |
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|
170 |
for i = 1, paths.n do |
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|
171 |
local path = paths[i]; |
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|
172 |
if path:sub(1,1) ~= "/" then -- Prepend default components |
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|
173 |
local n_components = select(2, path:gsub("/", "%1")); |
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|
174 |
path = (n_components<#default_path_components and "/" or "")..t_concat(default_path_components, "/", 1, #default_path_components-n_components).."/"..path; |
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|
175 |
end |
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|
176 |
local shared = shared_data[path]; |
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|
177 |
if not shared then |
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|
178 |
shared = {}; |
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|
179 |
if path:match("%-cache$") then |
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|
180 |
setmetatable(shared, { __mode = "kv" }); |
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|
181 |
end |
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|
182 |
shared_data[path] = shared; |
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|
183 |
end |
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|
184 |
t_insert(data_array, shared); |
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|
185 |
self.shared_data[path] = shared; |
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186 |
end |
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|
187 |
return unpack(data_array); |
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|
188 |
end |
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|
189 |
|
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|
190 |
function api:get_option(name, default_value) |
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|
191 |
local value = config.get(self.host, name); |
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|
192 |
if value == nil then |
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|
193 |
value = default_value; |
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|
194 |
end |
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|
195 |
return value; |
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|
196 |
end |
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|
197 |
|
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|
198 |
function api:get_option_string(name, default_value) |
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|
199 |
local value = self:get_option(name, default_value); |
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|
200 |
if type(value) == "table" then |
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|
201 |
if #value > 1 then |
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self:log("error", "Config option '%s' does not take a list, using just the first item", name); |
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end |
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value = value[1]; |
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end |
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if value == nil then |
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return nil; |
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end |
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return tostring(value); |
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end |
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|
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function api:get_option_number(name, ...) |
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local value = self:get_option(name, ...); |
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if type(value) == "table" then |
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if #value > 1 then |
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self:log("error", "Config option '%s' does not take a list, using just the first item", name); |
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217 |
end |
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value = value[1]; |
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end |
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local ret = tonumber(value); |
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if value ~= nil and ret == nil then |
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self:log("error", "Config option '%s' not understood, expecting a number", name); |
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end |
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return ret; |
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end |
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|
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function api:get_option_boolean(name, ...) |
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local value = self:get_option(name, ...); |
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if type(value) == "table" then |
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if #value > 1 then |
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self:log("error", "Config option '%s' does not take a list, using just the first item", name); |
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232 |
end |
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value = value[1]; |
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end |
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if value == nil then |
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return nil; |
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end |
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local ret = value == true or value == "true" or value == 1 or nil; |
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if ret == nil then |
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ret = (value == false or value == "false" or value == 0); |
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if ret then |
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ret = false; |
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243 |
else |
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ret = nil; |
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end |
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246 |
end |
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if ret == nil then |
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self:log("error", "Config option '%s' not understood, expecting true/false", name); |
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end |
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250 |
return ret; |
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251 |
end |
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252 |
|
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253 |
function api:get_option_array(name, ...) |
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local value = self:get_option(name, ...); |
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255 |
|
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if value == nil then |
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257 |
return nil; |
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258 |
end |
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|
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if type(value) ~= "table" then |
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return array{ value }; -- Assume any non-list is a single-item list |
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end |
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return array():append(value); -- Clone |
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end |
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|
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267 |
function api:get_option_set(name, ...) |
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local value = self:get_option_array(name, ...); |
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if value == nil then |
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271 |
return nil; |
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end |
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|
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274 |
return set.new(value); |
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275 |
end |
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276 |
|
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function api:get_option_inherited_set(name, ...) |
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local value = self:get_option_set(name, ...); |
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local global_value = self:context("*"):get_option_set(name, ...); |
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280 |
if not value then |
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281 |
return global_value; |
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282 |
elseif not global_value then |
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283 |
return value; |
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284 |
end |
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value:include(global_value); |
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286 |
return value; |
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287 |
end |
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|
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289 |
function api:context(host) |
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return setmetatable({host=host or "*"}, {__index=self,__newindex=self}); |
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291 |
end |
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292 |
|
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function api:add_item(key, value) |
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self.items = self.items or {}; |
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self.items[key] = self.items[key] or {}; |
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t_insert(self.items[key], value); |
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self:fire_event("item-added/"..key, {source = self, item = value}); |
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298 |
end |
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299 |
function api:remove_item(key, value) |
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local t = self.items and self.items[key] or NULL; |
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301 |
for i = #t,1,-1 do |
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if t[i] == value then |
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t_remove(self.items[key], i); |
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self:fire_event("item-removed/"..key, {source = self, item = value}); |
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305 |
return value; |
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306 |
end |
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307 |
end |
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308 |
end |
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309 |
|
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|
310 |
function api:get_host_items(key) |
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moduleapi: have get_host_items wrap on get_items from modulemanager, also add has_{feature/identity} to the API.
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311 |
local result = modulemanager.get_items(key, self.host) or {}; |
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312 |
return result; |
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|
313 |
end |
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314 |
|
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|
315 |
function api:handle_items(type, added_cb, removed_cb, existing) |
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316 |
self:hook("item-added/"..type, added_cb); |
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317 |
self:hook("item-removed/"..type, removed_cb); |
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318 |
if existing ~= false then |
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|
319 |
for _, item in ipairs(self:get_host_items(type)) do |
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320 |
added_cb({ item = item }); |
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|
321 |
end |
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|
322 |
end |
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|
323 |
end |
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|
324 |
|
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moduleapi: Add module:provides(), a shortcut to add an item with the current module's name
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325 |
function api:provides(name, item) |
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af58eea131b4
moduleapi: module:provides called without an item makes a copy of the environment instead. Fixes warnings about non-existent globals
Kim Alvefur <zash@zash.se>
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|
326 |
-- if not item then item = setmetatable({}, { __index = function(t,k) return rawget(self.environment, k); end }); end |
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|
327 |
if not item then |
af58eea131b4
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|
328 |
item = {} |
af58eea131b4
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|
329 |
for k,v in pairs(self.environment) do |
af58eea131b4
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parents:
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diff
changeset
|
330 |
if k ~= "module" then item[k] = v; end |
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parents:
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changeset
|
331 |
end |
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|
332 |
end |
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parents:
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changeset
|
333 |
if not item.name then |
4660
96b40b5e8ea8
moduleapi: module:provides(): Fix usage of wrong table
Matthew Wild <mwild1@gmail.com>
parents:
4651
diff
changeset
|
334 |
local item_name = self.name; |
4613
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parents:
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changeset
|
335 |
-- Strip a provider prefix to find the item name |
27fbc9c69eb5
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|
336 |
-- (e.g. "auth_foo" -> "foo" for an auth provider) |
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|
337 |
if item_name:find(name.."_", 1, true) == 1 then |
27fbc9c69eb5
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parents:
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diff
changeset
|
338 |
item_name = item_name:sub(#name+2); |
27fbc9c69eb5
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parents:
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diff
changeset
|
339 |
end |
27fbc9c69eb5
moduleapi: Add module:provides(), a shortcut to add an item with the current module's name
Matthew Wild <mwild1@gmail.com>
parents:
4605
diff
changeset
|
340 |
item.name = item_name; |
27fbc9c69eb5
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parents:
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diff
changeset
|
341 |
end |
5530
d83482fc4a81
moduleapi: in module:provides(), add the name of the module in item._provided_by
Kim Alvefur <zash@zash.se>
parents:
5529
diff
changeset
|
342 |
item._provided_by = self.name; |
4661
76db5d0a2104
moduleapi: module:provides(): Add "-provider" onto the key name
Matthew Wild <mwild1@gmail.com>
parents:
4660
diff
changeset
|
343 |
self:add_item(name.."-provider", item); |
4613
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parents:
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diff
changeset
|
344 |
end |
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parents:
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diff
changeset
|
345 |
|
4614
20940729c1b4
moduleapi: Add module:send() as an alias for core_post_stanza() from the current host's origin
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
346 |
function api:send(stanza) |
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|
347 |
return core_post_stanza(hosts[self.host], stanza); |
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changeset
|
348 |
end |
20940729c1b4
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parents:
4613
diff
changeset
|
349 |
|
4666
fb522fbd495e
moduleapi: Add module:add_timer(delay, callback) - automatically halts the timer on module unload
Matthew Wild <mwild1@gmail.com>
parents:
4663
diff
changeset
|
350 |
function api:add_timer(delay, callback) |
fb522fbd495e
moduleapi: Add module:add_timer(delay, callback) - automatically halts the timer on module unload
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parents:
4663
diff
changeset
|
351 |
return timer.add_task(delay, function (t) |
fb522fbd495e
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parents:
4663
diff
changeset
|
352 |
if self.loaded == false then return; end |
fb522fbd495e
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parents:
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diff
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|
353 |
return callback(t); |
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parents:
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changeset
|
354 |
end); |
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parents:
4663
diff
changeset
|
355 |
end |
fb522fbd495e
moduleapi: Add module:add_timer(delay, callback) - automatically halts the timer on module unload
Matthew Wild <mwild1@gmail.com>
parents:
4663
diff
changeset
|
356 |
|
4790
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
Matthew Wild <mwild1@gmail.com>
parents:
4750
diff
changeset
|
357 |
local path_sep = package.config:sub(1,1); |
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
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parents:
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diff
changeset
|
358 |
function api:get_directory() |
8bf710b19f65
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Matthew Wild <mwild1@gmail.com>
parents:
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changeset
|
359 |
return self.path and (self.path:gsub("%"..path_sep.."[^"..path_sep.."]*$", "")) or nil; |
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
360 |
end |
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
361 |
|
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
362 |
function api:load_resource(path, mode) |
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
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parents:
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diff
changeset
|
363 |
path = config.resolve_relative_path(self:get_directory(), path); |
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
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parents:
4750
diff
changeset
|
364 |
return io.open(path, mode); |
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
Matthew Wild <mwild1@gmail.com>
parents:
4750
diff
changeset
|
365 |
end |
8bf710b19f65
moduleapi: Add module:get_directory() to get module file's directory, and module:load_resource() to load a file relative to that directory
Matthew Wild <mwild1@gmail.com>
parents:
4750
diff
changeset
|
366 |
|
5496
7a0b81b5ca71
moduleapi: Add module:open_store() as a front-end to storagemanager.open()
Matthew Wild <mwild1@gmail.com>
parents:
5434
diff
changeset
|
367 |
function api:open_store(name, type) |
5498
2a67235e1d4d
moduleapi: Make module:open_store() open a store named after the calling module by default
Kim Alvefur <zash@zash.se>
parents:
5496
diff
changeset
|
368 |
return storagemanager.open(self.host, name or self.name, type); |
5496
7a0b81b5ca71
moduleapi: Add module:open_store() as a front-end to storagemanager.open()
Matthew Wild <mwild1@gmail.com>
parents:
5434
diff
changeset
|
369 |
end |
7a0b81b5ca71
moduleapi: Add module:open_store() as a front-end to storagemanager.open()
Matthew Wild <mwild1@gmail.com>
parents:
5434
diff
changeset
|
370 |
|
5053
375ab71e4b37
moduleapi: If path name ends with '-cache' create table as weak (keys and values)
Matthew Wild <mwild1@gmail.com>
parents:
5024
diff
changeset
|
371 |
return api; |