prosody
5af7fe1014db
core/configmanager.lua

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core/configmanager.lua @ 6167:5af7fe1014db

Merge 0.9->0.10
author Kim Alvefur <zash@zash.se>
date Fri, 09 May 2014 23:28:09 +0200
parent 6164:ef4024f6bc40
parent 6166:46cb87d531a7
child 6326:a3b9496673ee
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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 deps = require"util.dependencies";
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18 local resolve_relative_path = require"util.paths".resolve_relative_path;
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19 local glob_to_pattern = require"util.paths".glob_to_pattern;
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20 local path_sep = package.config:sub(1,1);
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21
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22 module "configmanager"
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23
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24 _M.resolve_relative_path = resolve_relative_path; -- COMPAT
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25
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26 local parsers = {};
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27
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28 local config_mt = { __index = function (t, k) return rawget(t, "*"); end};
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29 local config = setmetatable({ ["*"] = { } }, config_mt);
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30
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31 -- When host not found, use global
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32 local host_mt = { __index = function(_, k) return config["*"][k] end }
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33
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34 function getconfig()
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35 return config;
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36 end
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37
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38 function get(host, key, _oldkey)
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39 if key == "core" then
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40 key = _oldkey; -- COMPAT with code that still uses "core"
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41 end
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42 return config[host][key];
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43 end
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44 function _M.rawget(host, key, _oldkey)
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45 if key == "core" then
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46 key = _oldkey; -- COMPAT with code that still uses "core"
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47 end
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48 local hostconfig = rawget(config, host);
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49 if hostconfig then
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50 return rawget(hostconfig, key);
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51 end
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52 end
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53
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54 local function set(config, host, key, value)
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55 if host and key then
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56 local hostconfig = rawget(config, host);
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57 if not hostconfig then
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58 hostconfig = rawset(config, host, setmetatable({}, host_mt))[host];
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59 end
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60 hostconfig[key] = value;
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61 return true;
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62 end
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63 return false;
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64 end
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65
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66 function _M.set(host, key, value, _oldvalue)
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67 if key == "core" then
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68 key, value = value, _oldvalue; --COMPAT with code that still uses "core"
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69 end
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70 return set(config, host, key, value);
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71 end
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72
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73 function load(filename, format)
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74 format = format or filename:match("%w+$");
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75
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76 if parsers[format] and parsers[format].load then
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77 local f, err = io.open(filename);
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78 if f then
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79 local new_config = setmetatable({ ["*"] = { } }, config_mt);
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80 local ok, err = parsers[format].load(f:read("*a"), filename, new_config);
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81 f:close();
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82 if ok then
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83 config = new_config;
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84 fire_event("config-reloaded", {
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85 filename = filename,
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86 format = format,
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87 config = config
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88 });
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89 end
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90 return ok, "parser", err;
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91 end
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92 return f, "file", err;
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93 end
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94
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95 if not format then
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96 return nil, "file", "no parser specified";
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97 else
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98 return nil, "file", "no parser for "..(format);
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99 end
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100 end
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101
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102 function save(filename, format)
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103 end
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104
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105 function addparser(format, parser)
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106 if format and parser then
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107 parsers[format] = parser;
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108 end
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109 end
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110
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111 -- _M needed to avoid name clash with local 'parsers'
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112 function _M.parsers()
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113 local p = {};
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114 for format in pairs(parsers) do
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115 table.insert(p, format);
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116 end
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117 return p;
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118 end
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119
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120 -- Built-in Lua parser
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121 do
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122 local pcall, setmetatable = _G.pcall, _G.setmetatable;
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123 local rawget = _G.rawget;
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124 parsers.lua = {};
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125 function parsers.lua.load(data, config_file, config)
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126 local env;
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127 -- The ' = true' are needed so as not to set off __newindex when we assign the functions below
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128 env = setmetatable({
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129 Host = true, host = true, VirtualHost = true,
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130 Component = true, component = true,
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131 Include = true, include = true, RunScript = true }, {
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132 __index = function (t, k)
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133 return rawget(_G, k);
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134 end,
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135 __newindex = function (t, k, v)
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136 set(config, env.__currenthost or "*", k, v);
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137 end
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138 });
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139
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140 rawset(env, "__currenthost", "*") -- Default is global
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141 function env.VirtualHost(name)
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142 if rawget(config, name) and rawget(config[name], "component_module") then
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143 error(format("Host %q clashes with previously defined %s Component %q, for services use a sub-domain like conference.%s",
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144 name, config[name].component_module:gsub("^%a+$", { component = "external", muc = "MUC"}), name, name), 0);
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145 end
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146 rawset(env, "__currenthost", name);
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147 -- Needs at least one setting to logically exist :)
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148 set(config, name or "*", "defined", true);
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149 return function (config_options)
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150 rawset(env, "__currenthost", "*"); -- Return to global scope
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151 for option_name, option_value in pairs(config_options) do
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152 set(config, name or "*", option_name, option_value);
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153 end
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154 end;
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155 end
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156 env.Host, env.host = env.VirtualHost, env.VirtualHost;
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157
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158 function env.Component(name)
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159 if rawget(config, name) and rawget(config[name], "defined") and not rawget(config[name], "component_module") then
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160 error(format("Component %q clashes with previously defined Host %q, for services use a sub-domain like conference.%s",
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161 name, name, name), 0);
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162 end
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163 set(config, name, "component_module", "component");
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164 -- Don't load the global modules by default
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165 set(config, name, "load_global_modules", false);
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166 rawset(env, "__currenthost", name);
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167 local function handle_config_options(config_options)
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168 rawset(env, "__currenthost", "*"); -- Return to global scope
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169 for option_name, option_value in pairs(config_options) do
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170 set(config, name or "*", option_name, option_value);
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171 end
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172 end
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173
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174 return function (module)
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175 if type(module) == "string" then
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176 set(config, name, "component_module", module);
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177 return handle_config_options;
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178 end
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179 return handle_config_options(module);
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180 end
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181 end
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182 env.component = env.Component;
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183
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184 function env.Include(file)
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diff changeset
185 if file:match("[*?]") then
6166
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Kim Alvefur <zash@zash.se>
parents: 5811
diff changeset
186 local lfs = deps.softreq "lfs";
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187 if not lfs then
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188 error(format("Error expanding wildcard pattern in Include %q - LuaFileSystem not available", file));
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189 end
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190 local path_pos, glob = file:match("()([^"..path_sep.."]+)$");
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191 local path = file:sub(1, math_max(path_pos-2,0));
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192 local config_path = config_file:gsub("[^"..path_sep.."]+$", "");
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193 if #path > 0 then
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194 path = resolve_relative_path(config_path, path);
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195 else
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196 path = config_path;
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197 end
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198 local patt = glob_to_pattern(glob);
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diff changeset
199 for f in lfs.dir(path) do
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200 if f:sub(1,1) ~= "." and f:match(patt) then
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diff changeset
201 env.Include(path..path_sep..f);
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202 end
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203 end
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diff changeset
204 else
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diff changeset
205 local file = resolve_relative_path(config_file:gsub("[^"..path_sep.."]+$", ""), file);
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206 local f, err = io.open(file);
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diff changeset
207 if f then
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parents: 5021
diff changeset
208 local ret, err = parsers.lua.load(f:read("*a"), file, config);
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diff changeset
209 if not ret then error(err:gsub("%[string.-%]", file), 0); end
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diff changeset
210 end
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diff changeset
211 if not f then error("Error loading included "..file..": "..err, 0); end
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diff changeset
212 return f, err;
794
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
213 end
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
214 end
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parents: 793
diff changeset
215 env.include = env.Include;
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216
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diff changeset
217 function env.RunScript(file)
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diff changeset
218 return dofile(resolve_relative_path(config_file:gsub("[^"..path_sep.."]+$", ""), file));
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219 end
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220
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parents: 4530
diff changeset
221 local chunk, err = envload(data, "@"..config_file, env);
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222
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diff changeset
223 if not chunk then
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224 return nil, err;
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diff changeset
225 end
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226
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parents:
diff changeset
227 local ok, err = pcall(chunk);
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228
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diff changeset
229 if not ok then
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230 return nil, err;
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231 end
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232
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diff changeset
233 return true;
371
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parents:
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234 end
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235
371
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236 end
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parents:
diff changeset
237
466
0ecfd89c2cc0 Fix for configmanager when config file can't be found
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parents: 376
diff changeset
238 return _M;