prosody
0bf5e90be086
core/configmanager.lua

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core/configmanager.lua @ 5413:0bf5e90be086

configmanager: Some cleanup, remove unused variables and imports
author Matthew Wild <mwild1@gmail.com>
date Wed, 03 Apr 2013 08:14:55 +0100
parent 5380:e119e378b1d9
child 5776:bd0ff8ae98a8
child 5811:27ae988f5b70
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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 --
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b1885732e979 GPL->MIT!
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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 _G = _G;
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10 local setmetatable, rawget, rawset, io, error, dofile, type, pairs, table =
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11 setmetatable, rawget, rawset, io, error, dofile, type, pairs, table;
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12 local format, math_max = string.format, math.max;
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13
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14 local fire_event = prosody and prosody.events.fire_event or function () end;
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15
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16 local envload = require"util.envload".envload;
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17 local lfs = require "lfs";
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18 local path_sep = package.config:sub(1,1);
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19
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20 module "configmanager"
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21
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22 local parsers = {};
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23
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24 local config_mt = { __index = function (t, k) return rawget(t, "*"); end};
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25 local config = setmetatable({ ["*"] = { } }, config_mt);
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26
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27 -- When host not found, use global
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28 local host_mt = { __index = function(_, k) return config["*"][k] end }
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29
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30 function getconfig()
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31 return config;
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32 end
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33
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34 function get(host, key, _oldkey)
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35 if key == "core" then
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36 key = _oldkey; -- COMPAT with code that still uses "core"
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37 end
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38 return config[host][key];
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39 end
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40 function _M.rawget(host, key, _oldkey)
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41 if key == "core" then
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42 key = _oldkey; -- COMPAT with code that still uses "core"
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43 end
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44 local hostconfig = rawget(config, host);
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45 if hostconfig then
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46 return rawget(hostconfig, key);
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47 end
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48 end
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49
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50 local function set(config, host, key, value)
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51 if host and key then
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52 local hostconfig = rawget(config, host);
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53 if not hostconfig then
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54 hostconfig = rawset(config, host, setmetatable({}, host_mt))[host];
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55 end
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56 hostconfig[key] = value;
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57 return true;
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58 end
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59 return false;
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60 end
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61
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62 function _M.set(host, key, value, _oldvalue)
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63 if key == "core" then
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64 key, value = value, _oldvalue; --COMPAT with code that still uses "core"
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65 end
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66 return set(config, host, key, value);
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67 end
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68
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69 -- Helper function to resolve relative paths (needed by config)
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70 do
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71 function resolve_relative_path(parent_path, path)
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72 if path then
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73 -- Some normalization
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74 parent_path = parent_path:gsub("%"..path_sep.."+$", "");
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75 path = path:gsub("^%.%"..path_sep.."+", "");
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76
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77 local is_relative;
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78 if path_sep == "/" and path:sub(1,1) ~= "/" then
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79 is_relative = true;
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80 elseif path_sep == "\\" and (path:sub(1,1) ~= "/" and (path:sub(2,3) ~= ":\\" or path:sub(2,3) ~= ":/")) then
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81 is_relative = true;
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82 end
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83 if is_relative then
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84 return parent_path..path_sep..path;
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85 end
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86 end
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87 return path;
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88 end
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89 end
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90
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91 -- Helper function to convert a glob to a Lua pattern
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92 local function glob_to_pattern(glob)
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93 return "^"..glob:gsub("[%p*?]", function (c)
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94 if c == "*" then
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95 return ".*";
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96 elseif c == "?" then
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97 return ".";
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98 else
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99 return "%"..c;
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100 end
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101 end).."$";
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102 end
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103
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104 function load(filename, format)
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105 format = format or filename:match("%w+$");
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106
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107 if parsers[format] and parsers[format].load then
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108 local f, err = io.open(filename);
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109 if f then
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110 local new_config = setmetatable({ ["*"] = { } }, config_mt);
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111 local ok, err = parsers[format].load(f:read("*a"), filename, new_config);
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112 f:close();
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113 if ok then
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114 config = new_config;
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115 fire_event("config-reloaded", {
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116 filename = filename,
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117 format = format,
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118 config = config
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119 });
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120 end
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121 return ok, "parser", err;
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122 end
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123 return f, "file", err;
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124 end
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125
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126 if not format then
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127 return nil, "file", "no parser specified";
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128 else
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129 return nil, "file", "no parser for "..(format);
376
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130 end
371
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131 end
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132
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133 function save(filename, format)
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134 end
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135
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136 function addparser(format, parser)
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137 if format and parser then
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138 parsers[format] = parser;
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139 end
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140 end
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141
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142 -- _M needed to avoid name clash with local 'parsers'
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143 function _M.parsers()
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144 local p = {};
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145 for format in pairs(parsers) do
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146 table.insert(p, format);
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147 end
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148 return p;
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149 end
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150
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151 -- Built-in Lua parser
371
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152 do
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153 local pcall, setmetatable = _G.pcall, _G.setmetatable;
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154 local rawget = _G.rawget;
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155 parsers.lua = {};
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156 function parsers.lua.load(data, config_file, config)
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157 local env;
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158 -- The ' = true' are needed so as not to set off __newindex when we assign the functions below
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159 env = setmetatable({
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160 Host = true, host = true, VirtualHost = true,
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161 Component = true, component = true,
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162 Include = true, include = true, RunScript = true }, {
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163 __index = function (t, k)
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164 return rawget(_G, k);
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165 end,
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166 __newindex = function (t, k, v)
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167 set(config, env.__currenthost or "*", k, v);
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168 end
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169 });
371
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170
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171 rawset(env, "__currenthost", "*") -- Default is global
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172 function env.VirtualHost(name)
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173 if rawget(config, name) and rawget(config[name], "component_module") then
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174 error(format("Host %q clashes with previously defined %s Component %q, for services use a sub-domain like conference.%s",
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175 name, config[name].component_module:gsub("^%a+$", { component = "external", muc = "MUC"}), name, name), 0);
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176 end
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177 rawset(env, "__currenthost", name);
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178 -- Needs at least one setting to logically exist :)
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179 set(config, name or "*", "defined", true);
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180 return function (config_options)
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181 rawset(env, "__currenthost", "*"); -- Return to global scope
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182 for option_name, option_value in pairs(config_options) do
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183 set(config, name or "*", option_name, option_value);
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184 end
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185 end;
371
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186 end
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187 env.Host, env.host = env.VirtualHost, env.VirtualHost;
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188
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189 function env.Component(name)
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190 if rawget(config, name) and rawget(config[name], "defined") and not rawget(config[name], "component_module") then
2861
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191 error(format("Component %q clashes with previously defined Host %q, for services use a sub-domain like conference.%s",
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192 name, name, name), 0);
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193 end
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194 set(config, name, "component_module", "component");
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195 -- Don't load the global modules by default
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196 set(config, name, "load_global_modules", false);
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197 rawset(env, "__currenthost", name);
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198 local function handle_config_options(config_options)
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diff changeset
199 rawset(env, "__currenthost", "*"); -- Return to global scope
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200 for option_name, option_value in pairs(config_options) do
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201 set(config, name or "*", option_name, option_value);
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diff changeset
202 end
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203 end
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diff changeset
204
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205 return function (module)
857
49298263f241 core.configmanager: Small fix to check validity of Component definitions
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diff changeset
206 if type(module) == "string" then
5357
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207 set(config, name, "component_module", module);
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diff changeset
208 return handle_config_options;
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parents: 795
diff changeset
209 end
3515
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diff changeset
210 return handle_config_options(module);
750
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diff changeset
211 end
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diff changeset
212 end
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diff changeset
213 env.component = env.Component;
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214
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215 function env.Include(file)
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diff changeset
216 if file:match("[*?]") then
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
217 local path_pos, glob = file:match("()([^"..path_sep.."]+)$");
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diff changeset
218 local path = file:sub(1, math_max(path_pos-2,0));
3929
7cb03d67101b configmanager: Filenames without a path are also relative to the config file path, not the current working directory
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219 local config_path = config_file:gsub("[^"..path_sep.."]+$", "");
3905
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diff changeset
220 if #path > 0 then
3929
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parents: 3905
diff changeset
221 path = resolve_relative_path(config_path, path);
3905
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diff changeset
222 else
3929
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223 path = config_path;
3905
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diff changeset
224 end
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diff changeset
225 local patt = glob_to_pattern(glob);
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diff changeset
226 for f in lfs.dir(path) do
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
227 if f:sub(1,1) ~= "." and f:match(patt) then
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
228 env.Include(path..path_sep..f);
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229 end
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diff changeset
230 end
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diff changeset
231 else
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diff changeset
232 local file = resolve_relative_path(config_file:gsub("[^"..path_sep.."]+$", ""), file);
3905
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diff changeset
233 local f, err = io.open(file);
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diff changeset
234 if f then
5124
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diff changeset
235 local ret, err = parsers.lua.load(f:read("*a"), file, config);
3905
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diff changeset
236 if not ret then error(err:gsub("%[string.-%]", file), 0); end
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
237 end
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
238 if not f then error("Error loading included "..file..": "..err, 0); end
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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diff changeset
239 return f, err;
794
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
240 end
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
241 end
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
242 env.include = env.Include;
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
243
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diff changeset
244 function env.RunScript(file)
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diff changeset
245 return dofile(resolve_relative_path(config_file:gsub("[^"..path_sep.."]+$", ""), file));
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diff changeset
246 end
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diff changeset
247
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diff changeset
248 local chunk, err = envload(data, "@"..config_file, env);
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parents:
diff changeset
249
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250 if not chunk then
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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parents:
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251 return nil, err;
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252 end
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253
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parents:
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254 local ok, err = pcall(chunk);
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255
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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256 if not ok then
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257 return nil, err;
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258 end
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259
3613
f617718d2221 configmanager: Change parser API again to pass a config table to insert settings to. Fixes Include(). (Thanks Zash/answerman)
Matthew Wild <mwild1@gmail.com>
parents: 3610
diff changeset
260 return true;
371
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261 end
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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parents:
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262
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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263 end
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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264
466
0ecfd89c2cc0 Fix for configmanager when config file can't be found
Matthew Wild <mwild1@gmail.com>
parents: 376
diff changeset
265 return _M;