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116 lines
3.6 KiB
116 lines
3.6 KiB
-- Prosody IM
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-- Copyright (C) 2008-2010 Matthew Wild
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-- Copyright (C) 2008-2010 Waqas Hussain
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--
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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-- luacheck: ignore 113/CFG_PLUGINDIR
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local dir_sep, path_sep = package.config:match("^(%S+)%s(%S+)");
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local lua_version = _VERSION:match(" (.+)$");
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local plugin_dir = {};
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for path in (CFG_PLUGINDIR or "./plugins/"):gsub("[/\\]", dir_sep):gmatch("[^"..path_sep.."]+") do
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path = path..dir_sep; -- add path separator to path end
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path = path:gsub(dir_sep..dir_sep.."+", dir_sep); -- coalesce multiple separators
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plugin_dir[#plugin_dir + 1] = path;
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end
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local io_open = io.open;
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local envload = require "prosody.util.envload".envload;
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local pluginloader_methods = {};
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local pluginloader_mt = { __index = pluginloader_methods };
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function pluginloader_methods:load_file(names)
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local file, err, path;
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local load_filter_cb = self._options.load_filter_cb;
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local last_filter_path, last_filter_err;
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for i=1,#plugin_dir do
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for j=1,#names do
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path = plugin_dir[i]..names[j];
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file, err = io_open(path);
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if file then
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local content = file:read("*a");
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file:close();
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local metadata;
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if load_filter_cb then
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path, content, metadata = load_filter_cb(path, content);
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end
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if path and content then
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return content, path, metadata;
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else
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last_filter_path = plugin_dir[i]..names[j];
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last_filter_err = content or "skipped";
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end
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end
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end
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end
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if last_filter_err then
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return nil, err..(" (%s skipped because of %s)"):format(last_filter_path, last_filter_err);
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end
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return file, err;
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end
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function pluginloader_methods:load_resource(plugin, resource)
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resource = resource or "mod_"..plugin..".lua";
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local names = {
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"mod_"..plugin..dir_sep..plugin..dir_sep..resource; -- mod_hello/hello/mod_hello.lua
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"mod_"..plugin..dir_sep..resource; -- mod_hello/mod_hello.lua
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plugin..dir_sep..resource; -- hello/mod_hello.lua
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resource; -- mod_hello.lua
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"share"..dir_sep.."lua"..dir_sep..lua_version..dir_sep..resource;
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"share"..dir_sep.."lua"..dir_sep..lua_version..dir_sep.."mod_"..plugin..dir_sep..resource;
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};
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return self:load_file(names);
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end
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function pluginloader_methods:load_code(plugin, resource, env)
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local content, err, metadata = self:load_resource(plugin, resource);
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if not content then return content, err; end
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local path = err;
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local f, err = envload(content, "@"..path, env);
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if not f then return f, err; end
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return f, path, metadata;
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end
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function pluginloader_methods:load_code_ext(plugin, resource, extension, env)
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local content, err, metadata = self:load_resource(plugin, resource.."."..extension);
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if not content and extension == "lib.lua" then
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content, err, metadata = self:load_resource(plugin, resource..".lua");
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end
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if not content then
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content, err, metadata = self:load_resource(resource, resource.."."..extension);
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if not content then
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return content, err;
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end
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end
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local path = err;
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local f, err = envload(content, "@"..path, env);
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if not f then return f, err; end
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return f, path, metadata;
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end
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local function init(options)
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return setmetatable({
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_options = options or {};
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}, pluginloader_mt);
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end
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local function bind(self, method)
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return function (...)
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return method(self, ...);
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end;
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end
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local default_loader = init();
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return {
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load_file = bind(default_loader, default_loader.load_file);
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load_resource = bind(default_loader, default_loader.load_resource);
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load_code = bind(default_loader, default_loader.load_code);
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load_code_ext = bind(default_loader, default_loader.load_code_ext);
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init = init;
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};
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