prosody
5b778ec095f0
util/pluginloader.lua

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util/pluginloader.lua @ 11098:5b778ec095f0

util.error: Expose source and registry as fields on the registry object For access, e.g. to identify and compare errors later
author Kim Alvefur <zash@zash.se>
date Mon, 28 Sep 2020 19:26:48 +0200
parent 10205:ff8de86b75f0
child 11129:387d442497e7
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rev   line source
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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 -- luacheck: ignore 113/CFG_PLUGINDIR
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9
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10 local dir_sep, path_sep = package.config:match("^(%S+)%s(%S+)");
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11 local plugin_dir = {};
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12 for path in (CFG_PLUGINDIR or "./plugins/"):gsub("[/\\]", dir_sep):gmatch("[^"..path_sep.."]+") do
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13 path = path..dir_sep; -- add path separator to path end
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14 path = path:gsub(dir_sep..dir_sep.."+", dir_sep); -- coalesce multiple separaters
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15 plugin_dir[#plugin_dir + 1] = path;
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16 end
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17
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18 local io_open = io.open;
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19 local envload = require "util.envload".envload;
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21 local function load_file(names)
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22 local file, err, path;
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23 for i=1,#plugin_dir do
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24 for j=1,#names do
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25 path = plugin_dir[i]..names[j];
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26 file, err = io_open(path);
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27 if file then
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28 local content = file:read("*a");
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29 file:close();
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30 return content, path;
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31 end
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32 end
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33 end
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34 return file, err;
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35 end
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36
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37 local function load_resource(plugin, resource)
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38 resource = resource or "mod_"..plugin..".lua";
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39 local lua_version = _VERSION:match(" (.+)$");
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40 local names = {
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41 "mod_"..plugin..dir_sep..plugin..dir_sep..resource; -- mod_hello/hello/mod_hello.lua
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42 "mod_"..plugin..dir_sep..resource; -- mod_hello/mod_hello.lua
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43 plugin..dir_sep..resource; -- hello/mod_hello.lua
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44 resource; -- mod_hello.lua
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45 "share"..dir_sep.."lua"..dir_sep..lua_version..dir_sep.."mod_"..plugin..dir_sep..resource;
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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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50
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51 local function load_code(plugin, resource, env)
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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 = envload(content, "@"..path, env);
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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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59
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60 local function load_code_ext(plugin, resource, extension, env)
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61 local content, err = load_resource(plugin, resource.."."..extension);
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62 if not content then
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63 content, err = load_resource(resource, resource.."."..extension);
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64 if not content then
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65 return content, err;
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66 end
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67 end
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68 local path = err;
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69 local f, err = envload(content, "@"..path, env);
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70 if not f then return f, err; end
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71 return f, path;
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72 end
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73
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74 return {
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75 load_file = load_file;
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76 load_resource = load_resource;
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77 load_code = load_code;
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78 load_code_ext = load_code_ext;
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79 };