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>
37 #include <vlc_charset.h>
39 #include <vlc_interface.h>
40 #include <vlc_playlist.h>
42 #include <sys/types.h>
45 #include <lua.h> /* Low level lua C API */
46 #include <lauxlib.h> /* Higher level C API */
47 #include <lualib.h> /* Lua libs */
52 /*****************************************************************************
54 *****************************************************************************/
55 static void *Run( void * );
57 static const char * const ppsz_intf_options[] = { "intf", "config", NULL };
59 /*****************************************************************************
61 *****************************************************************************/
62 static inline void luaL_register_submodule( lua_State *L, const char *psz_name,
66 luaL_register( L, NULL, l );
67 lua_setfield( L, -2, psz_name );
72 const char *psz_shortcut;
77 { "luahotkeys", "hotkeys" },
78 /* { "hotkeys", "hotkeys" }, */
79 { "luatelnet", "telnet" },
80 { "telnet", "telnet" },
81 { "luahttp", "http" },
85 static const char *WordInList( const char *psz_list, const char *psz_word )
87 size_t i_len = strlen( psz_word );
89 for( const char *s = psz_list; s; s = strchr( s, ',' ) )
91 if( !strncmp( s, psz_word, i_len )
92 && memchr( ",", s[i_len], 2 ) )
98 static char *GetModuleName( intf_thread_t *p_intf )
101 const char *psz_intf;
102 /*if( *p_intf->psz_intf == '$' )
103 psz_intf = var_GetString( p_intf, p_intf->psz_intf+1 );
105 psz_intf = p_intf->psz_intf;
107 int i_candidate = -1;
108 const char *psz_candidate = NULL;
109 for( i = 0; pp_shortcuts[i].psz_name; i++ )
111 const char *psz_match;
112 if( ( psz_match = WordInList( psz_intf, pp_shortcuts[i].psz_shortcut ) ) )
114 if( !psz_candidate || psz_match < psz_candidate )
116 psz_candidate = psz_match;
122 if( i_candidate >= 0 )
123 return strdup( pp_shortcuts[i_candidate].psz_name );
125 return var_CreateGetString( p_intf, "lua-intf" );
128 static const luaL_Reg p_reg[] = { { NULL, NULL } };
130 int Open_LuaIntf( vlc_object_t *p_this )
132 intf_thread_t *p_intf = (intf_thread_t*)p_this;
136 config_ChainParse( p_intf, "lua-", ppsz_intf_options, p_intf->p_cfg );
137 char *psz_name = NULL;
139 if( !p_intf->psz_intf || !*p_intf->psz_intf )
140 psz_name = strdup( "rc" );
142 psz_name = GetModuleName( p_intf );
144 if( !psz_name ) psz_name = strdup( "dummy" );
147 bool b_config_set = false;
149 p_intf->p_sys = (intf_sys_t*)malloc( sizeof(intf_sys_t) );
155 p_sys = p_intf->p_sys;
156 p_sys->psz_filename = vlclua_find_file( p_this, "intf", psz_name );
157 if( !p_sys->psz_filename )
159 msg_Err( p_intf, "Couldn't find lua interface script \"%s\".",
163 msg_Dbg( p_intf, "Found lua interface script: %s", p_sys->psz_filename );
168 msg_Err( p_intf, "Could not create new Lua State" );
174 /* register our functions */
175 luaL_register( L, "vlc", p_reg );
177 /* store a pointer to p_intf (FIXME: user could overwrite this) */
178 lua_pushlightuserdata( L, p_intf );
179 lua_setfield( L, -2, "private" );
181 /* register submodules */
192 luaopen_playlist( L );
195 luaopen_strings( L );
196 luaopen_variables( L );
200 luaopen_gettext( L );
206 /* Setup the module search path */
209 char *psz_char = strrchr(p_sys->psz_filename,DIR_SEP_CHAR);
211 /* FIXME: don't use luaL_dostring */
212 if( asprintf( &psz_command,
213 "package.path = [[%s"DIR_SEP"modules"DIR_SEP"?.lua;]]..package.path",
214 p_sys->psz_filename ) < 0 )
218 *psz_char = DIR_SEP_CHAR;
219 if( luaL_dostring( L, psz_command ) )
228 psz_config = var_CreateGetString( p_intf, "lua-config" );
229 if( psz_config && *psz_config )
232 if( asprintf( &psz_buffer, "config={%s}", psz_config ) != -1 )
234 printf("%s\n", psz_buffer);
235 if( luaL_dostring( L, psz_buffer ) == 1 )
236 msg_Err( p_intf, "Error while parsing \"lua-config\"." );
238 lua_getglobal( L, "config" );
239 if( lua_istable( L, -1 ) )
241 lua_getfield( L, -1, psz_name );
242 if( lua_istable( L, -1 ) )
244 lua_setglobal( L, "config" );
252 if( b_config_set == false )
255 lua_setglobal( L, "config" );
260 p_intf->psz_header = psz_name;
261 /* ^^ Do I need to clean that up myself in Close_LuaIntf? */
263 vlc_mutex_init( &p_sys->lock );
264 vlc_cond_init( &p_sys->wait );
265 p_sys->exiting = false;
267 if( vlc_clone( &p_sys->thread, Run, p_intf, VLC_THREAD_PRIORITY_LOW ) )
269 p_intf->psz_header = NULL;
270 vlc_cond_destroy( &p_sys->wait );
271 vlc_mutex_destroy( &p_sys->lock );
272 lua_close( p_sys->L );
278 free( p_sys->psz_filename );
284 void Close_LuaIntf( vlc_object_t *p_this )
286 intf_thread_t *p_intf = (intf_thread_t*)p_this;
287 intf_sys_t *p_sys = p_intf->p_sys;
289 vlc_cancel( p_sys->thread );
291 vlc_mutex_lock( &p_sys->lock );
292 p_sys->exiting = true;
293 vlc_cond_signal( &p_sys->wait );
294 vlc_mutex_unlock( &p_sys->lock );
295 vlc_join( p_sys->thread, NULL );
296 vlc_cond_destroy( &p_sys->wait );
297 vlc_mutex_destroy( &p_sys->lock );
299 lua_close( p_sys->L );
301 free( p_sys->psz_filename );
305 static void *Run( void *data )
307 intf_thread_t *p_intf = data;
308 intf_sys_t *p_sys = p_intf->p_sys;
309 lua_State *L = p_sys->L;
311 if( luaL_dofile( L, p_sys->psz_filename ) )
313 msg_Err( p_intf, "Error loading script %s: %s", p_sys->psz_filename,
314 lua_tostring( L, lua_gettop( L ) ) );