1 /*****************************************************************************
2 * intf.c: Generic lua interface functions
3 *****************************************************************************
4 * Copyright (C) 2007-2008 the VideoLAN team
7 * Authors: Antoine Cellerier <dionoea at videolan tod org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
35 #include <vlc_common.h>
38 #include <vlc_interface.h>
39 #include <vlc_playlist.h>
41 #include <sys/types.h>
44 #include <lua.h> /* Low level lua C API */
45 #include <lauxlib.h> /* Higher level C API */
46 #include <lualib.h> /* Lua libs */
51 /*****************************************************************************
53 *****************************************************************************/
54 static void *Run( void * );
56 static const char * const ppsz_intf_options[] = { "intf", "config", NULL };
58 /*****************************************************************************
60 *****************************************************************************/
61 static inline void luaL_register_submodule( lua_State *L, const char *psz_name,
65 luaL_register( L, NULL, l );
66 lua_setfield( L, -2, psz_name );
71 const char *psz_shortcut;
76 { "luahotkeys", "hotkeys" },
77 /* { "hotkeys", "hotkeys" }, */
78 { "luatelnet", "telnet" },
79 { "telnet", "telnet" },
80 { "luahttp", "http" },
84 static const char *WordInList( const char *psz_list, const char *psz_word )
86 size_t i_len = strlen( psz_word );
88 for( const char *s = psz_list; s; s = strchr( s, ',' ) )
90 if( !strncmp( s, psz_word, i_len )
91 && memchr( ",", s[i_len], 2 ) )
97 static char *GetModuleName( intf_thread_t *p_intf )
100 const char *psz_intf;
101 /*if( *p_intf->psz_intf == '$' )
102 psz_intf = var_GetString( p_intf, p_intf->psz_intf+1 );
104 psz_intf = p_intf->psz_intf;
106 int i_candidate = -1;
107 const char *psz_candidate = NULL;
108 for( i = 0; pp_shortcuts[i].psz_name; i++ )
110 const char *psz_match;
111 if( ( psz_match = WordInList( psz_intf, pp_shortcuts[i].psz_shortcut ) ) )
113 if( !psz_candidate || psz_match < psz_candidate )
115 psz_candidate = psz_match;
121 if( i_candidate >= 0 )
122 return strdup( pp_shortcuts[i_candidate].psz_name );
124 return var_CreateGetString( p_intf, "lua-intf" );
127 static const luaL_Reg p_reg[] = { { NULL, NULL } };
129 int Open_LuaIntf( vlc_object_t *p_this )
131 intf_thread_t *p_intf = (intf_thread_t*)p_this;
135 config_ChainParse( p_intf, "lua-", ppsz_intf_options, p_intf->p_cfg );
136 char *psz_name = NULL;
138 if( !p_intf->psz_intf || !*p_intf->psz_intf )
139 psz_name = strdup( "rc" );
141 psz_name = GetModuleName( p_intf );
143 if( !psz_name ) psz_name = strdup( "dummy" );
146 bool b_config_set = false;
148 p_intf->p_sys = (intf_sys_t*)malloc( sizeof(intf_sys_t) );
154 p_sys = p_intf->p_sys;
155 p_sys->psz_filename = vlclua_find_file( p_this, "intf", psz_name );
156 if( !p_sys->psz_filename )
158 msg_Err( p_intf, "Couldn't find lua interface script \"%s\".",
162 msg_Dbg( p_intf, "Found lua interface script: %s", p_sys->psz_filename );
167 msg_Err( p_intf, "Could not create new Lua State" );
173 /* register our functions */
174 luaL_register( L, "vlc", p_reg );
176 /* store a pointer to p_intf (FIXME: user could overwrite this) */
177 lua_pushlightuserdata( L, p_intf );
178 lua_setfield( L, -2, "private" );
180 /* register submodules */
191 luaopen_playlist( L );
194 luaopen_strings( L );
195 luaopen_variables( L );
199 luaopen_gettext( L );
205 /* Setup the module search path */
206 if( vlclua_add_modules_path( p_intf, L, p_sys->psz_filename ) )
208 msg_Warn( p_intf, "Error while setting the module search path for %s",
209 p_sys->psz_filename );
214 psz_config = var_CreateGetString( p_intf, "lua-config" );
215 if( psz_config && *psz_config )
218 if( asprintf( &psz_buffer, "config={%s}", psz_config ) != -1 )
220 printf("%s\n", psz_buffer);
221 if( luaL_dostring( L, psz_buffer ) == 1 )
222 msg_Err( p_intf, "Error while parsing \"lua-config\"." );
224 lua_getglobal( L, "config" );
225 if( lua_istable( L, -1 ) )
227 lua_getfield( L, -1, psz_name );
228 if( lua_istable( L, -1 ) )
230 lua_setglobal( L, "config" );
238 if( b_config_set == false )
241 lua_setglobal( L, "config" );
246 p_intf->psz_header = psz_name;
247 /* ^^ Do I need to clean that up myself in Close_LuaIntf? */
249 vlc_mutex_init( &p_sys->lock );
250 vlc_cond_init( &p_sys->wait );
251 p_sys->exiting = false;
253 if( vlc_clone( &p_sys->thread, Run, p_intf, VLC_THREAD_PRIORITY_LOW ) )
255 p_intf->psz_header = NULL;
256 vlc_cond_destroy( &p_sys->wait );
257 vlc_mutex_destroy( &p_sys->lock );
258 lua_close( p_sys->L );
264 free( p_sys->psz_filename );
270 void Close_LuaIntf( vlc_object_t *p_this )
272 intf_thread_t *p_intf = (intf_thread_t*)p_this;
273 intf_sys_t *p_sys = p_intf->p_sys;
275 vlc_cancel( p_sys->thread );
277 vlc_mutex_lock( &p_sys->lock );
278 p_sys->exiting = true;
279 vlc_cond_signal( &p_sys->wait );
280 vlc_mutex_unlock( &p_sys->lock );
281 vlc_join( p_sys->thread, NULL );
282 vlc_cond_destroy( &p_sys->wait );
283 vlc_mutex_destroy( &p_sys->lock );
285 lua_close( p_sys->L );
287 free( p_sys->psz_filename );
291 static void *Run( void *data )
293 intf_thread_t *p_intf = data;
294 intf_sys_t *p_sys = p_intf->p_sys;
295 lua_State *L = p_sys->L;
297 if( luaL_dofile( L, p_sys->psz_filename ) )
299 msg_Err( p_intf, "Error loading script %s: %s", p_sys->psz_filename,
300 lua_tostring( L, lua_gettop( L ) ) );