Annotate

core/configmanager.lua @ 696:b35faad717f2

mod_httpserver: Add require 'net.httpserver'
author Matthew Wild <mwild1@gmail.com>
date Mon, 12 Jan 2009 03:29:05 +0000
parent 615:4ae3e81513f3
child 750:fbfcf8c1c830
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4ae3e81513f3 0.1 -> 0.2
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1 -- Prosody IM v0.2
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2 -- Copyright (C) 2008 Matthew Wild
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3 -- Copyright (C) 2008 Waqas Hussain
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4 --
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5 -- This program is free software; you can redistribute it and/or
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6 -- modify it under the terms of the GNU General Public License
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7 -- as published by the Free Software Foundation; either version 2
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8 -- of the License, or (at your option) any later version.
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9 --
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10 -- This program is distributed in the hope that it will be useful,
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11 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 -- GNU General Public License for more details.
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14 --
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15 -- You should have received a copy of the GNU General Public License
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16 -- along with this program; if not, write to the Free Software
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17 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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18 --
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19
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20
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21
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22 local _G = _G;
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23 local setmetatable, loadfile, pcall, rawget, rawset, io =
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24 setmetatable, loadfile, pcall, rawget, rawset, io;
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25
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26 module "configmanager"
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27
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28 local parsers = {};
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29
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30 local config = { ["*"] = { core = {} } };
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31
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32 local global_config = config["*"];
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33
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34 -- When host not found, use global
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35 setmetatable(config, { __index = function () return global_config; end});
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36 local host_mt = { __index = global_config };
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37
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38 -- When key not found in section, check key in global's section
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39 function section_mt(section_name)
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40 return { __index = function (t, k)
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41 local section = rawget(global_config, section_name);
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42 if not section then return nil; end
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43 return section[k];
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44 end };
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45 end
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46
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47 function getconfig()
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48 return config;
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49 end
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50
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51 function get(host, section, key)
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52 local sec = config[host][section];
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53 if sec then
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54 return sec[key];
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55 end
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56 return nil;
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57 end
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58
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59 function set(host, section, key, value)
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60 if host and section and key then
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61 local hostconfig = rawget(config, host);
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62 if not hostconfig then
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63 hostconfig = rawset(config, host, setmetatable({}, host_mt))[host];
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64 end
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65 if not rawget(hostconfig, section) then
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66 hostconfig[section] = setmetatable({}, section_mt(section));
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67 end
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68 hostconfig[section][key] = value;
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69 return true;
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70 end
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71 return false;
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72 end
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73
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74 function load(filename, format)
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75 format = format or filename:match("%w+$");
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76
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77 if parsers[format] and parsers[format].load then
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78 local f, err = io.open(filename);
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79 if f then
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80 local ok, err = parsers[format].load(f:read("*a"));
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81 f:close();
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82 return ok, err;
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83 end
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84 return f, err;
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85 end
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86
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87 if not format then
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88 return nil, "no parser specified";
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89 else
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90 return nil, "no parser for "..(format);
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91 end
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92 end
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93
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94 function save(filename, format)
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95 end
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96
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97 function addparser(format, parser)
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98 if format and parser then
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99 parsers[format] = parser;
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100 end
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101 end
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102
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103 -- Built-in Lua parser
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104 do
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105 local loadstring, pcall, setmetatable = _G.loadstring, _G.pcall, _G.setmetatable;
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106 local setfenv, rawget, tostring = _G.setfenv, _G.rawget, _G.tostring;
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107 parsers.lua = {};
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108 function parsers.lua.load(data)
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109 local env;
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110 env = setmetatable({ Host = true; host = true; }, { __index = function (t, k)
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111 return rawget(_G, k) or
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112 function (settings_table)
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113 config[__currenthost or "*"][k] = settings_table;
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114 end;
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115 end,
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116 __newindex = function (t, k, v)
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117 set(env.__currenthost or "*", "core", k, v);
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118 end});
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119
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120 function env.Host(name)
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121 rawset(env, "__currenthost", name);
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122 set(name or "*", "core", "defined", true);
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123 end
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124 env.host = env.Host;
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125
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126 local chunk, err = loadstring(data);
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127
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128 if not chunk then
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129 return nil, err;
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130 end
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131
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132 setfenv(chunk, env);
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133
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134 local ok, err = pcall(chunk);
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135
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136 if not ok then
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137 return nil, err;
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
Matthew Wild <mwild1@gmail.com>
parents:
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138 end
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
Matthew Wild <mwild1@gmail.com>
parents:
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139
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
Matthew Wild <mwild1@gmail.com>
parents:
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140 return true;
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
Matthew Wild <mwild1@gmail.com>
parents:
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141 end
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
Matthew Wild <mwild1@gmail.com>
parents:
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142
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
Matthew Wild <mwild1@gmail.com>
parents:
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143 end
0dc5819660e8 Import initial configmanager, not sure if it works yet, but it does pass the unit tests ;)
Matthew Wild <mwild1@gmail.com>
parents:
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144
466
0ecfd89c2cc0 Fix for configmanager when config file can't be found
Matthew Wild <mwild1@gmail.com>
parents: 376
diff changeset
145 return _M;