/*
 *  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/>.
 */

#include <lua.h>
#include <lauxlib.h>

#include "sig_handler.h"

#include "l_sig_handler.h"

static int l_signal_init(lua_State *L)
{
  int sig_fd = signal_init();
  if(sig_fd < 0)
    luaL_error(L, "error at signal init");

  lua_newtable(L);
  lua_pushliteral(L, "fd");
  lua_pushinteger(L, sig_fd);
  lua_settable(L, -3);
  return 1;
}

static int l_signal_stop(lua_State *L)
{
  signal_stop();
  return 0;
}

static int l_signal_handle(lua_State *L)
{
  int ret = signal_handle();
  lua_pushinteger(L, ret);
  return 1;
}

static const struct luaL_Reg signal_funcs [] = {
  { "init", l_signal_init },
  { "stop", l_signal_stop },
  { "handle", l_signal_handle },
  { NULL, NULL }
};


LUALIB_API int luaopen_signal(lua_State *L)
{
#if LUA_VERSION_NUM > 501
  lua_newtable(L);
  luaL_setfuncs(L, signal_funcs, 0);
  lua_pushvalue(L, -1);
  lua_setglobal(L, LUA_SIGNALLIBNAME);
#else
  luaL_register(L, LUA_SIGNALLIBNAME, signal_funcs);
#endif
  return 1;
}