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/*****************************************************************************
* vlm.c: Generic lua VLM wrapper
*****************************************************************************
* Copyright (C) 2007-2008 the VideoLAN team
* $Id: d48755c1769fd6e644d536e4f5d20b5bd9cb2acd $
*
* Authors: Antoine Cellerier <dionoea at videolan tod org>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_vlm.h>
#include <lua.h> /* Low level lua C API */
#include <lauxlib.h> /* Higher level C API */
#include "../vlc.h"
#include "../libs.h"
/*****************************************************************************
*
*****************************************************************************/
#ifdef ENABLE_VLM
static int vlclua_vlm_delete( lua_State * );
static int vlclua_vlm_execute_command( lua_State * );
static const luaL_Reg vlclua_vlm_reg[] = {
{ "execute_command", vlclua_vlm_execute_command },
{ NULL, NULL }
};
static int vlclua_vlm_new( lua_State *L )
{
vlc_object_t *p_this = vlclua_get_this( L );
vlm_t *p_vlm = vlm_New( p_this );
if( !p_vlm )
return luaL_error( L, "Cannot start VLM." );
vlm_t **pp_vlm = lua_newuserdata( L, sizeof( vlm_t * ) );
*pp_vlm = p_vlm;
if( luaL_newmetatable( L, "vlm" ) )
{
lua_newtable( L );
luaL_register( L, NULL, vlclua_vlm_reg );
lua_setfield( L, -2, "__index" );
lua_pushcfunction( L, vlclua_vlm_delete );
lua_setfield( L, -2, "__gc" );
}
lua_setmetatable( L, -2 );
return 1;
}
static int vlclua_vlm_delete( lua_State *L )
{
vlm_t **pp_vlm = (vlm_t**)luaL_checkudata( L, 1, "vlm" );
vlm_Delete( *pp_vlm );
return 0;
}
static void push_message( lua_State *L, vlm_message_t *message )
{
lua_createtable( L, 0, 2 );
lua_pushstring( L, message->psz_name );
lua_setfield( L, -2, "name" );
if( message->i_child > 0 )
{
int i;
lua_createtable( L, message->i_child, 0 );
for( i = 0; i < message->i_child; i++ )
{
lua_pushinteger( L, i+1 );
push_message( L, message->child[i] );
lua_settable( L, -3 );
}
lua_setfield( L, -2, "children" );
}
if ( message->psz_value )
{
lua_pushstring( L, message->psz_value );
lua_setfield( L, -2, "value" );
}
}
static int vlclua_vlm_execute_command( lua_State *L )
{
vlm_t **pp_vlm = (vlm_t**)luaL_checkudata( L, 1, "vlm" );
const char *psz_command = luaL_checkstring( L, 2 );
vlm_message_t *message;
int i_ret;
i_ret = vlm_ExecuteCommand( *pp_vlm, psz_command, &message );
lua_settop( L, 0 );
push_message( L, message );
vlm_MessageDelete( message );
return 1 + vlclua_push_ret( L, i_ret );
}
#else
static int vlclua_vlm_new( lua_State *L )
{
return luaL_error( L, "Cannot start VLM because it was disabled when compiling VLC." );
}
#endif
/*****************************************************************************
*
*****************************************************************************/
void luaopen_vlm( lua_State *L )
{
lua_pushcfunction( L, vlclua_vlm_new );
lua_setfield( L, -2, "vlm" );
}
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