prosody
ac651265766c
util/pluginloader.lua

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util/pluginloader.lua @ 4400:ac651265766c

net.dns: Preserve metatable on manual cache purge
author Matthew Wild <mwild1@gmail.com>
date Wed, 19 Oct 2011 16:21:56 -0400
parent 4154:3785a9bb7f11
child 5021:85b2689dbcfe
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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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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 dir_sep, path_sep = package.config:match("^(%S+)%s(%S+)");
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10 local plugin_dir = {};
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11 for path in (CFG_PLUGINDIR or "./plugins/"):gsub("[/\\]", dir_sep):gmatch("[^"..path_sep.."]+") do
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12 path = path..dir_sep; -- add path separator to path end
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13 path = path:gsub(dir_sep..dir_sep.."+", dir_sep); -- coalesce multiple separaters
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14 plugin_dir[#plugin_dir + 1] = path;
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15 end
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17 local io_open, os_time = io.open, os.time;
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18 local loadstring, pairs = loadstring, pairs;
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19
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20 module "pluginloader"
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22 local function load_file(names)
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23 local file, err, path;
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24 for i=1,#plugin_dir do
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25 for j=1,#names do
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26 path = plugin_dir[i]..names[j];
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27 file, err = io_open(path);
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28 if file then
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29 local content = file:read("*a");
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30 file:close();
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31 return content, path;
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32 end
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33 end
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34 end
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35 return file, err;
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36 end
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37
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38 function load_resource(plugin, resource)
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39 resource = resource or "mod_"..plugin..".lua";
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41 local names = {
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42 "mod_"..plugin.."/"..plugin.."/"..resource; -- mod_hello/hello/mod_hello.lua
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43 "mod_"..plugin.."/"..resource; -- mod_hello/mod_hello.lua
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44 plugin.."/"..resource; -- hello/mod_hello.lua
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45 resource; -- mod_hello.lua
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46 };
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47
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48 return load_file(names);
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49 end
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51 function load_code(plugin, resource)
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52 local content, err = load_resource(plugin, resource);
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53 if not content then return content, err; end
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54 local path = err;
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55 local f, err = loadstring(content, "@"..path);
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56 if not f then return f, err; end
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57 return f, path;
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58 end
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60 return _M;