prosody
2f4496f46da2
util/pluginloader.lua

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util/pluginloader.lua @ 4181:2f4496f46da2

util.pluginloader: Return file path on success in pluginloader.load_code().
author Waqas Hussain <waqas20@gmail.com>
date Sun, 20 Feb 2011 20:03:43 +0500
parent 4180:cd3fb3393e13
child 4152:4d52812d018d
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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, path;
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24 for i=1,#plugin_dir do
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25 path = plugin_dir[i]..name;
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26 file, err = io_open(path);
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27 if file then break; end
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28 end
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29 if not file then return file, err; end
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30 local content = file:read("*a");
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31 file:close();
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32 return content, path;
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33 end
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34
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35 function load_resource(plugin, resource, loader)
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36 local path, name = plugin:match("([^/]*)/?(.*)");
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37 if name == "" then
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38 if not resource then
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39 resource = "mod_"..plugin..".lua";
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40 end
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41 loader = loader or load_file;
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42
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43 local content, err = loader(plugin.."/"..resource);
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44 if not content then content, err = loader(resource); end
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45 -- TODO add support for packed plugins
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47 return content, err;
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48 else
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49 if not resource then
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50 resource = "mod_"..name..".lua";
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51 end
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52 loader = loader or load_file;
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54 local content, err = loader(plugin.."/"..resource);
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55 if not content then content, err = loader(path.."/"..resource); end
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56 -- TODO add support for packed plugins
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57
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58 return content, err;
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59 end
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60 end
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61
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62 function load_code(plugin, resource)
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63 local content, err = load_resource(plugin, resource);
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64 if not content then return content, err; end
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65 local path = err;
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66 local f, err = loadstring(content, "@"..path);
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67 if not f then return f, err; end
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68 return f, path;
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69 end
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70
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71 return _M;