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-- 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;
};
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