prosody
9a70a543c727
util/pluginloader.lua

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util/pluginloader.lua @ 11962:9a70a543c727

util.async: Add next-tick configuration Running woken runners in the next iteration of the event loop prevents unexpected recursion, unexpected tracebacks, and is generally more predictable. The pattern is borrowed from util.promise, where we're now doing the same.
author Matthew Wild <mwild1@gmail.com>
date Mon, 29 Nov 2021 14:14:30 +0000
parent 11131:40abef01f4b9
child 12250:e157e5c79daa
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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 lua_version = _VERSION:match(" (.+)$");
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12 local plugin_dir = {};
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13 for path in (CFG_PLUGINDIR or "./plugins/"):gsub("[/\\]", dir_sep):gmatch("[^"..path_sep.."]+") do
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14 path = path..dir_sep; -- add path separator to path end
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15 path = path:gsub(dir_sep..dir_sep.."+", dir_sep); -- coalesce multiple separaters
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16 plugin_dir[#plugin_dir + 1] = path;
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17 end
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18
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19 local io_open = io.open;
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20 local envload = require "util.envload".envload;
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21
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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 local function load_resource(plugin, resource)
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39 resource = resource or "mod_"..plugin..".lua";
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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..resource;
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46 "share"..dir_sep.."lua"..dir_sep..lua_version..dir_sep.."mod_"..plugin..dir_sep..resource;
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47 };
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48
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49 return load_file(names);
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50 end
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51
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52 local function load_code(plugin, resource, env)
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53 local content, err = load_resource(plugin, resource);
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54 if not content then return content, err; end
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55 local path = err;
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56 local f, err = envload(content, "@"..path, env);
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57 if not f then return f, err; end
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58 return f, path;
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59 end
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61 local function load_code_ext(plugin, resource, extension, env)
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62 local content, err = load_resource(plugin, resource.."."..extension);
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63 if not content and extension == "lib.lua" then
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64 content, err = load_resource(plugin, resource..".lua");
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65 end
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66 if not content then
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67 content, err = load_resource(resource, resource.."."..extension);
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68 if not content then
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69 return content, err;
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70 end
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71 end
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72 local path = err;
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73 local f, err = envload(content, "@"..path, env);
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74 if not f then return f, err; end
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75 return f, path;
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76 end
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77
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78 return {
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79 load_file = load_file;
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80 load_resource = load_resource;
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81 load_code = load_code;
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82 load_code_ext = load_code_ext;
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83 };