prosody
ea7e3f22f898
util/pluginloader.lua

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util/pluginloader.lua @ 4121:ea7e3f22f898

util.pluginloader: Add support for multiple plugin directories.
author Waqas Hussain <waqas20@gmail.com>
date Fri, 21 Jan 2011 04:35:49 +0500
parent 3411:7170aaeb582d
child 4149:3c1b153c2856
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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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21
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22 local function load_file(name)
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23 local file, err;
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24 for i=1,#plugin_dir do
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25 file, err = io_open(plugin_dir[i]..name);
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26 if file then break; end
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27 end
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28 if not file then return file, err; end
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29 local content = file:read("*a");
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30 file:close();
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31 return content, name;
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32 end
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33
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34 function load_resource(plugin, resource, loader)
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35 local path, name = plugin:match("([^/]*)/?(.*)");
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36 if name == "" then
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37 if not resource then
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38 resource = "mod_"..plugin..".lua";
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39 end
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40 loader = loader or load_file;
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41
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42 local content, err = loader(plugin.."/"..resource);
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43 if not content then content, err = loader(resource); end
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44 -- TODO add support for packed plugins
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46 return content, err;
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47 else
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48 if not resource then
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49 resource = "mod_"..name..".lua";
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50 end
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51 loader = loader or load_file;
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53 local content, err = loader(plugin.."/"..resource);
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54 if not content then content, err = loader(path.."/"..resource); end
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55 -- TODO add support for packed plugins
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56
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57 return content, err;
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58 end
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59 end
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60
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61 function load_code(plugin, resource)
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62 local content, err = load_resource(plugin, resource);
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63 if not content then return content, err; end
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64 return loadstring(content, "@"..err);
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65 end
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66
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67 return _M;