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 char *FindFile( vlc_object_t *p_this, const char *psz_name )
64 char *ppsz_dir_list[] = { NULL, NULL, NULL, NULL };
66 vlclua_dir_list( p_this, "intf", ppsz_dir_list );
67 for( ppsz_dir = ppsz_dir_list; *ppsz_dir; ppsz_dir++ )
72 if( asprintf( &psz_filename, "%s"DIR_SEP"%s.lua", *ppsz_dir,
75 vlclua_dir_list_free( ppsz_dir_list );
79 if( utf8_stat( psz_filename, &st ) == 0
80 && S_ISREG( st.st_mode ) )
82 vlclua_dir_list_free( ppsz_dir_list );
87 vlclua_dir_list_free( ppsz_dir_list );
91 static inline void luaL_register_submodule( lua_State *L, const char *psz_name,
95 luaL_register( L, NULL, l );
96 lua_setfield( L, -2, psz_name );
101 const char *psz_shortcut;
102 const char *psz_name;
106 { "luahotkeys", "hotkeys" },
107 /* { "hotkeys", "hotkeys" }, */
108 { "luatelnet", "telnet" },
109 { "telnet", "telnet" },
110 { "luahttp", "http" },
114 static const char *WordInList( const char *psz_list, const char *psz_word )
116 size_t i_len = strlen( psz_word );
118 for( const char *s = psz_list; s; s = strchr( s, ',' ) )
120 if( !strncmp( s, psz_word, i_len )
121 && memchr( ",", s[i_len], 2 ) )
127 static char *GetModuleName( intf_thread_t *p_intf )
130 const char *psz_intf;
131 /*if( *p_intf->psz_intf == '$' )
132 psz_intf = var_GetString( p_intf, p_intf->psz_intf+1 );
134 psz_intf = p_intf->psz_intf;
136 int i_candidate = -1;
137 const char *psz_candidate = NULL;
138 for( i = 0; pp_shortcuts[i].psz_name; i++ )
140 const char *psz_match;
141 if( ( psz_match = WordInList( psz_intf, pp_shortcuts[i].psz_shortcut ) ) )
143 if( !psz_candidate || psz_match < psz_candidate )
145 psz_candidate = psz_match;
151 if( i_candidate >= 0 )
152 return strdup( pp_shortcuts[i_candidate].psz_name );
154 return var_CreateGetString( p_intf, "lua-intf" );
157 static const luaL_Reg p_reg[] = { { NULL, NULL } };
159 int Open_LuaIntf( vlc_object_t *p_this )
161 intf_thread_t *p_intf = (intf_thread_t*)p_this;
165 config_ChainParse( p_intf, "lua-", ppsz_intf_options, p_intf->p_cfg );
166 char *psz_name = NULL;
168 if( !p_intf->psz_intf || !*p_intf->psz_intf )
169 psz_name = strdup( "rc" );
171 psz_name = GetModuleName( p_intf );
173 if( !psz_name ) psz_name = strdup( "dummy" );
176 bool b_config_set = false;
178 p_intf->p_sys = (intf_sys_t*)malloc( sizeof(intf_sys_t) );
184 p_sys = p_intf->p_sys;
185 p_sys->psz_filename = FindFile( p_this, psz_name );
186 if( !p_sys->psz_filename )
188 msg_Err( p_intf, "Couldn't find lua interface script \"%s\".",
192 msg_Dbg( p_intf, "Found lua interface script: %s", p_sys->psz_filename );
197 msg_Err( p_intf, "Could not create new Lua State" );
203 /* register our functions */
204 luaL_register( L, "vlc", p_reg );
206 /* store a pointer to p_intf (FIXME: user could overwrite this) */
207 lua_pushlightuserdata( L, p_intf );
208 lua_setfield( L, -2, "private" );
210 /* register submodules */
221 luaopen_playlist( L );
224 luaopen_strings( L );
225 luaopen_variables( L );
229 luaopen_gettext( L );
235 /* Setup the module search path */
238 char *psz_char = strrchr(p_sys->psz_filename,DIR_SEP_CHAR);
240 /* FIXME: don't use luaL_dostring */
241 if( asprintf( &psz_command,
242 "package.path = [[%s"DIR_SEP"modules"DIR_SEP"?.lua;]]..package.path",
243 p_sys->psz_filename ) < 0 )
247 *psz_char = DIR_SEP_CHAR;
248 if( luaL_dostring( L, psz_command ) )
257 psz_config = var_CreateGetString( p_intf, "lua-config" );
258 if( psz_config && *psz_config )
261 if( asprintf( &psz_buffer, "config={%s}", psz_config ) != -1 )
263 printf("%s\n", psz_buffer);
264 if( luaL_dostring( L, psz_buffer ) == 1 )
265 msg_Err( p_intf, "Error while parsing \"lua-config\"." );
267 lua_getglobal( L, "config" );
268 if( lua_istable( L, -1 ) )
270 lua_getfield( L, -1, psz_name );
271 if( lua_istable( L, -1 ) )
273 lua_setglobal( L, "config" );
281 if( b_config_set == false )
284 lua_setglobal( L, "config" );
289 p_intf->psz_header = psz_name;
290 /* ^^ Do I need to clean that up myself in Close_LuaIntf? */
292 vlc_mutex_init( &p_sys->lock );
293 vlc_cond_init( &p_sys->wait );
294 p_sys->exiting = false;
296 if( vlc_clone( &p_sys->thread, Run, p_intf, VLC_THREAD_PRIORITY_LOW ) )
298 p_intf->psz_header = NULL;
299 vlc_cond_destroy( &p_sys->wait );
300 vlc_mutex_destroy( &p_sys->lock );
301 lua_close( p_sys->L );
307 free( p_sys->psz_filename );
313 void Close_LuaIntf( vlc_object_t *p_this )
315 intf_thread_t *p_intf = (intf_thread_t*)p_this;
316 intf_sys_t *p_sys = p_intf->p_sys;
318 vlc_cancel( p_sys->thread );
320 vlc_mutex_lock( &p_sys->lock );
321 p_sys->exiting = true;
322 vlc_cond_signal( &p_sys->wait );
323 vlc_mutex_unlock( &p_sys->lock );
324 vlc_join( p_sys->thread, NULL );
325 vlc_cond_destroy( &p_sys->wait );
326 vlc_mutex_destroy( &p_sys->lock );
328 lua_close( p_sys->L );
330 free( p_sys->psz_filename );
334 static void *Run( void *data )
336 intf_thread_t *p_intf = data;
337 intf_sys_t *p_sys = p_intf->p_sys;
338 lua_State *L = p_sys->L;
340 if( luaL_dofile( L, p_sys->psz_filename ) )
342 msg_Err( p_intf, "Error loading script %s: %s", p_sys->psz_filename,
343 lua_tostring( L, lua_gettop( L ) ) );