File

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