prosody
63f50a84318f
core/configmanager.lua

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core/configmanager.lua @ 7776:63f50a84318f

mod_carbons: Rename some variables for clarity
author Kim Alvefur <zash@zash.se>
date Thu, 08 Dec 2016 17:51:23 +0100
parent 6779:6236668da30a
child 7947:24170d74b00b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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841d61be198f Remove version number from copyright headers
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1 -- Prosody IM
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b7049746bd29 Update copyright headers for 2010
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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 local encodings = deps.softreq"util.encodings";
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23 local nameprep = encodings and encodings.stringprep.nameprep or function (host) return host:lower(); end
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24
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25 local _M = {};
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26 local _ENV = nil;
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27
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28 _M.resolve_relative_path = resolve_relative_path; -- COMPAT
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29
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30 local parsers = {};
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31
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32 local config_mt = { __index = function (t, _) return rawget(t, "*"); end};
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33 local config = setmetatable({ ["*"] = { } }, config_mt);
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34
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35 -- When host not found, use global
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36 local host_mt = { __index = function(_, k) return config["*"][k] end }
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37
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38 function _M.getconfig()
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39 return config;
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40 end
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41
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42 function _M.get(host, key, _oldkey)
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43 if key == "core" then
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44 key = _oldkey; -- COMPAT with code that still uses "core"
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45 end
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46 return config[host][key];
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47 end
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48 function _M.rawget(host, key, _oldkey)
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49 if key == "core" then
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50 key = _oldkey; -- COMPAT with code that still uses "core"
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51 end
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52 local hostconfig = rawget(config, host);
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53 if hostconfig then
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54 return rawget(hostconfig, key);
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55 end
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56 end
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57
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58 local function set(config_table, host, key, value)
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59 if host and key then
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60 local hostconfig = rawget(config_table, host);
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61 if not hostconfig then
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62 hostconfig = rawset(config_table, host, setmetatable({}, host_mt))[host];
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63 end
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64 hostconfig[key] = value;
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65 return true;
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66 end
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67 return false;
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68 end
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69
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70 function _M.set(host, key, value, _oldvalue)
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71 if key == "core" then
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72 key, value = value, _oldvalue; --COMPAT with code that still uses "core"
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73 end
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74 return set(config, host, key, value);
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75 end
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76
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77 function _M.load(filename, config_format)
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78 config_format = config_format or filename:match("%w+$");
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79
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80 if parsers[config_format] and parsers[config_format].load then
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81 local f, err = io.open(filename);
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82 if f then
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83 local new_config = setmetatable({ ["*"] = { } }, config_mt);
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84 local ok, err = parsers[config_format].load(f:read("*a"), filename, new_config);
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85 f:close();
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86 if ok then
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87 config = new_config;
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88 fire_event("config-reloaded", {
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89 filename = filename,
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90 format = config_format,
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91 config = config
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92 });
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93 end
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94 return ok, "parser", err;
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95 end
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96 return f, "file", err;
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97 end
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98
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99 if not config_format then
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100 return nil, "file", "no parser specified";
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101 else
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102 return nil, "file", "no parser for "..(config_format);
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103 end
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104 end
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105
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106 function _M.addparser(config_format, parser)
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107 if config_format and parser then
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108 parsers[config_format] = parser;
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109 end
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110 end
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111
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112 -- _M needed to avoid name clash with local 'parsers'
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113 function _M.parsers()
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114 local p = {};
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115 for config_format in pairs(parsers) do
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116 table.insert(p, config_format);
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117 end
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118 return p;
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119 end
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120
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121 -- Built-in Lua parser
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122 do
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123 local pcall = _G.pcall;
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124 parsers.lua = {};
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125 function parsers.lua.load(data, config_file, config_table)
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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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parents: 2974
diff changeset
128 env = setmetatable({
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parents: 2985 3011
diff changeset
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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diff changeset
132 __index = function (_, k)
5357
ac530c44772e configmanager, hostmanager, prosody: Almost complete removal of section-related code, and the infamous 'core' section. Still backwards-compatible with API users.
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parents: 5124
diff changeset
133 return rawget(_G, k);
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134 end,
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135 __newindex = function (_, k, v)
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diff changeset
136 set(config_table, 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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parents: 1523
diff changeset
140 rawset(env, "__currenthost", "*") -- Default is global
3011
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parents: 2925
diff changeset
141 function env.VirtualHost(name)
6323
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parents: 6166
diff changeset
142 name = nameprep(name);
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parents: 6715
diff changeset
143 if rawget(config_table, name) and rawget(config_table[name], "component_module") then
2861
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parents: 1777
diff changeset
144 error(format("Host %q clashes with previously defined %s Component %q, for services use a sub-domain like conference.%s",
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parents: 6715
diff changeset
145 name, config_table[name].component_module:gsub("^%a+$", { component = "external", muc = "MUC"}), name, name), 0);
2861
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parents: 1777
diff changeset
146 end
376
6d87944df37c New configmanager. Old-style config files still work, but will print a warning
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parents: 371
diff changeset
147 rawset(env, "__currenthost", name);
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148 -- Needs at least one setting to logically exist :)
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parents: 6715
diff changeset
149 set(config_table, name or "*", "defined", true);
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diff changeset
150 return function (config_options)
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parents: 3384
diff changeset
151 rawset(env, "__currenthost", "*"); -- Return to global scope
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parents: 3384
diff changeset
152 for option_name, option_value in pairs(config_options) do
6716
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parents: 6715
diff changeset
153 set(config_table, name or "*", option_name, option_value);
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parents: 3384
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154 end
bb494c3aa364 configmanager: Allow VirtualHost/Component definitions to be followed by a table of config options
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155 end;
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parents:
diff changeset
156 end
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parents: 2925
diff changeset
157 env.Host, env.host = env.VirtualHost, env.VirtualHost;
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diff changeset
158
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diff changeset
159 function env.Component(name)
6323
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parents: 6166
diff changeset
160 name = nameprep(name);
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parents: 6715
diff changeset
161 if rawget(config_table, name) and rawget(config_table[name], "defined") and not rawget(config_table[name], "component_module") then
2861
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parents: 1777
diff changeset
162 error(format("Component %q clashes with previously defined Host %q, for services use a sub-domain like conference.%s",
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parents: 1777
diff changeset
163 name, name, name), 0);
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parents: 1777
diff changeset
164 end
6716
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parents: 6715
diff changeset
165 set(config_table, name, "component_module", "component");
913
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parents: 896
diff changeset
166 -- Don't load the global modules by default
6716
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parents: 6715
diff changeset
167 set(config_table, name, "load_global_modules", false);
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parents: 896
diff changeset
168 rawset(env, "__currenthost", name);
3515
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parents: 3384
diff changeset
169 local function handle_config_options(config_options)
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parents: 3384
diff changeset
170 rawset(env, "__currenthost", "*"); -- Return to global scope
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parents: 3384
diff changeset
171 for option_name, option_value in pairs(config_options) do
6716
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parents: 6715
diff changeset
172 set(config_table, name or "*", option_name, option_value);
3515
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parents: 3384
diff changeset
173 end
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parents: 3384
diff changeset
174 end
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175
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diff changeset
176 return function (module)
857
49298263f241 core.configmanager: Small fix to check validity of Component definitions
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parents: 795
diff changeset
177 if type(module) == "string" then
6716
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parents: 6715
diff changeset
178 set(config_table, name, "component_module", module);
3515
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parents: 3384
diff changeset
179 return handle_config_options;
857
49298263f241 core.configmanager: Small fix to check validity of Component definitions
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parents: 795
diff changeset
180 end
3515
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diff changeset
181 return handle_config_options(module);
750
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182 end
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diff changeset
183 end
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diff changeset
184 env.component = env.Component;
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185
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parents: 5380
diff changeset
186 function env.Include(file)
6718
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parents: 6717
diff changeset
187 -- Check whether this is a wildcard Include
3905
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parents: 3780
diff changeset
188 if file:match("[*?]") then
6166
46cb87d531a7 configmanager: Delay importing LuaFileSystem until needed by an Include line
Kim Alvefur <zash@zash.se>
parents: 5811
diff changeset
189 local lfs = deps.softreq "lfs";
46cb87d531a7 configmanager: Delay importing LuaFileSystem until needed by an Include line
Kim Alvefur <zash@zash.se>
parents: 5811
diff changeset
190 if not lfs then
46cb87d531a7 configmanager: Delay importing LuaFileSystem until needed by an Include line
Kim Alvefur <zash@zash.se>
parents: 5811
diff changeset
191 error(format("Error expanding wildcard pattern in Include %q - LuaFileSystem not available", file));
46cb87d531a7 configmanager: Delay importing LuaFileSystem until needed by an Include line
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parents: 5811
diff changeset
192 end
3905
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diff changeset
193 local path_pos, glob = file:match("()([^"..path_sep.."]+)$");
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parents: 3780
diff changeset
194 local path = file:sub(1, math_max(path_pos-2,0));
3929
7cb03d67101b configmanager: Filenames without a path are also relative to the config file path, not the current working directory
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parents: 3905
diff changeset
195 local config_path = config_file:gsub("[^"..path_sep.."]+$", "");
3905
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parents: 3780
diff changeset
196 if #path > 0 then
3929
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parents: 3905
diff changeset
197 path = resolve_relative_path(config_path, path);
3905
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parents: 3780
diff changeset
198 else
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parents: 3905
diff changeset
199 path = config_path;
3905
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diff changeset
200 end
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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parents: 3780
diff changeset
201 local patt = glob_to_pattern(glob);
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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parents: 3780
diff changeset
202 for f in lfs.dir(path) do
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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parents: 3780
diff changeset
203 if f:sub(1,1) ~= "." and f:match(patt) then
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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parents: 3780
diff changeset
204 env.Include(path..path_sep..f);
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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parents: 3780
diff changeset
205 end
9222dad9e1e8 configmanager: Support for wildcards in Include directives
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parents: 3780
diff changeset
206 end
6718
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parents: 6717
diff changeset
207 return;
794
912dc389935a Add Include command to include extra configuration files from the main one
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parents: 793
diff changeset
208 end
6718
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parents: 6717
diff changeset
209 -- Not a wildcard, so resolve (potentially) relative path and run through config parser
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parents: 6717
diff changeset
210 file = resolve_relative_path(config_file:gsub("[^"..path_sep.."]+$", ""), file);
be98ebe87eef configmanager: Refactor function to avoid re-declaring local variable [luacheck]
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parents: 6717
diff changeset
211 local f, err = io.open(file);
be98ebe87eef configmanager: Refactor function to avoid re-declaring local variable [luacheck]
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parents: 6717
diff changeset
212 if f then
be98ebe87eef configmanager: Refactor function to avoid re-declaring local variable [luacheck]
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parents: 6717
diff changeset
213 local ret, err = parsers.lua.load(f:read("*a"), file, config_table);
be98ebe87eef configmanager: Refactor function to avoid re-declaring local variable [luacheck]
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parents: 6717
diff changeset
214 if not ret then error(err:gsub("%[string.-%]", file), 0); end
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parents: 6717
diff changeset
215 end
be98ebe87eef configmanager: Refactor function to avoid re-declaring local variable [luacheck]
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parents: 6717
diff changeset
216 if not f then error("Error loading included "..file..": "..err, 0); end
be98ebe87eef configmanager: Refactor function to avoid re-declaring local variable [luacheck]
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parents: 6717
diff changeset
217 return f, err;
794
912dc389935a Add Include command to include extra configuration files from the main one
Matthew Wild <mwild1@gmail.com>
parents: 793
diff changeset
218 end
912dc389935a Add Include command to include extra configuration files from the main one
Matthew Wild <mwild1@gmail.com>
parents: 793
diff changeset
219 env.include = env.Include;
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diff changeset
220
3610
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Matthew Wild <mwild1@gmail.com>
parents: 3609
diff changeset
221 function env.RunScript(file)
3905
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parents: 3780
diff changeset
222 return dofile(resolve_relative_path(config_file:gsub("[^"..path_sep.."]+$", ""), file));
3610
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parents: 3609
diff changeset
223 end
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diff changeset
224
5021
85b2689dbcfe Eliminate direct setfenv usage
Florian Zeitz <florob@babelmonkeys.de>
parents: 4530
diff changeset
225 local chunk, err = envload(data, "@"..config_file, env);
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diff changeset
226
371
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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parents:
diff changeset
227 if not chunk then
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parents:
diff changeset
228 return nil, err;
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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parents:
diff changeset
229 end
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diff changeset
230
371
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parents:
diff changeset
231 local ok, err = pcall(chunk);
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diff changeset
232
371
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parents:
diff changeset
233 if not ok then
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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parents:
diff changeset
234 return nil, err;
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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parents:
diff changeset
235 end
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diff changeset
236
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
237 return true;
371
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parents:
diff changeset
238 end
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diff changeset
239
371
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parents:
diff changeset
240 end
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
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parents:
diff changeset
241
466
0ecfd89c2cc0 Fix for configmanager when config file can't be found
Matthew Wild <mwild1@gmail.com>
parents: 376
diff changeset
242 return _M;