--
--  gcsd
--
--  gcsd the generic command sequencer daemon can be used to serialize
--  commands sent over various paralell communication channels to a
--  single command output. It can be seen as a multiplexer for any
--  kind of communication between a single resource and various clients
--  which want to submit commands to it or query information from it.
--  gcsd is written in C and Lua. The goal is to provide an easy to
--  understand high level API based on Lua which can be used to
--  implement the business logic of the so formed multiplexer daemon.
--
--
--  Copyright (C) 2009-2010 Markus Grueneis <gimpf@spreadspace.org>
--                          Christian Pointner <equinox@spreadspace.org>
--
--  This file is part of gcsd.
--
--  gcsd is free software: you can redistribute it and/or modify
--  it under the terms of the GNU General Public License as published by
--  the Free Software Foundation, either version 3 of the License, or
--  any later version.
--
--  gcsd is distributed in the hope that it will be useful,
--  but WITHOUT ANY WARRANTY; without even the implied warranty of
--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--  GNU General Public License for more details.
--
--  You should have received a copy of the GNU General Public License
--  along with gcsd. If not, see <http://www.gnu.org/licenses/>.
--

client_list = {}

client_list.clients = {}

function client_list:register(client)
   log.printf(log.INFO, "adding client: " .. client.name)
   table.insert(self.clients, client)
end

function client_list:unregister(client)
   for i, c in ipairs(self.clients) do
      if(c == client) then
         log.printf(log.INFO, "removing client: " .. client.name)
         client:cleanup()
         table.remove(self.clients, i)
         break
      end
   end
end

function client_list:unregister_by_module(module)
   local free_list = {}

   for i, c in ipairs(self.clients) do
      if(c.module_instance == module) then
         table.insert(free_list, 1, i)
      end
   end

   for _, i in ipairs(free_list) do
      log.printf(log.INFO, "removing client: " .. self.clients[i].name)
      self.clients[i]:cleanup()
      table.remove(self.clients, i)
   end
end