1 /*****************************************************************************
2 * configuration_chain.c : configuration module chain parsing stuff
3 *****************************************************************************
4 * Copyright (C) 2002-2006 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * Laurent Aimar <fenrir@via.ecp.fr>
9 * Eric Petit <titer@videolan.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
32 #include <stdlib.h> /* free() */
33 #include <stdio.h> /* sprintf() */
34 #include <string.h> /* strerror() */
36 /*****************************************************************************
38 *****************************************************************************/
41 module{option=*:option=*}[:module{option=*:...}]
43 #define SKIPSPACE( p ) { while( *p && ( *p == ' ' || *p == '\t' ) ) p++; }
44 #define SKIPTRAILINGSPACE( p, e ) \
45 { while( e > p && ( *(e-1) == ' ' || *(e-1) == '\t' ) ) e--; }
47 /* go accross " " and { } */
48 static const char *_get_chain_end( const char *str )
57 if( !*p || *p == ',' || *p == '}' ) return p;
59 if( *p != '{' && *p != '"' && *p != '\'' )
65 if( *p == '{' ) c = '}';
73 if( *p == c ) return ++p;
74 else if( *p == '{' && c == '}' ) p = _get_chain_end( p );
80 char *config_ChainCreate( char **ppsz_name, config_chain_t **pp_cfg, const char *psz_chain )
82 config_chain_t *p_cfg = NULL;
83 const char *p = psz_chain;
92 while( *p && *p != '{' && *p != ':' && *p != ' ' && *p != '\t' ) p++;
94 if( p == psz_chain ) return NULL;
96 *ppsz_name = strndup( psz_chain, p - psz_chain );
102 const char *psz_name;
114 while( *p && *p != '=' && *p != ',' && *p != '{' && *p != '}' &&
115 *p != ' ' && *p != '\t' ) p++;
117 /* fprintf( stderr, "name=%s - rest=%s\n", psz_name, p ); */
120 fprintf( stderr, "invalid options (empty)" );
124 cfg.psz_name = strndup( psz_name, p - psz_name );
128 if( *p == '=' || *p == '{' )
131 vlc_bool_t b_keep_brackets = (*p == '{');
135 end = _get_chain_end( p );
138 cfg.psz_value = NULL;
142 /* Skip heading and trailing spaces.
143 * This ain't necessary but will avoid simple
150 cfg.psz_value = NULL;
154 if( *p == '\'' || *p == '"' ||
155 ( !b_keep_brackets && *p == '{' ) )
159 if( *(end-1) != '\'' && *(end-1) == '"' )
160 SKIPTRAILINGSPACE( p, end );
162 if( end - 1 <= p ) cfg.psz_value = NULL;
163 else cfg.psz_value = strndup( p, end -1 - p );
167 SKIPTRAILINGSPACE( p, end );
168 if( end <= p ) cfg.psz_value = NULL;
169 else cfg.psz_value = strndup( p, end - p );
178 cfg.psz_value = NULL;
184 p_cfg->p_next = malloc( sizeof( config_chain_t ) );
185 memcpy( p_cfg->p_next, &cfg, sizeof( config_chain_t ) );
187 p_cfg = p_cfg->p_next;
191 p_cfg = malloc( sizeof( config_chain_t ) );
192 memcpy( p_cfg, &cfg, sizeof( config_chain_t ) );
207 if( *p == ':' ) return( strdup( p + 1 ) );
212 void config_ChainDestroy( config_chain_t *p_cfg )
214 while( p_cfg != NULL )
216 config_chain_t *p_next;
218 p_next = p_cfg->p_next;
220 FREENULL( p_cfg->psz_name );
221 FREENULL( p_cfg->psz_value );
228 void __config_ChainParse( vlc_object_t *p_this, const char *psz_prefix,
229 const char *const *ppsz_options, config_chain_t *cfg )
231 if( psz_prefix == NULL ) psz_prefix = "";
232 size_t plen = 1 + strlen( psz_prefix );
234 /* First, var_Create all variables */
235 for( size_t i = 0; ppsz_options[i] != NULL; i++ )
237 const char *optname = ppsz_options[i];
238 if (optname[0] == '*')
241 char name[plen + strlen( optname )];
242 snprintf( name, sizeof (name), "%s%s", psz_prefix, optname );
243 if( var_Create( p_this, name,
244 config_GetType( p_this, name ) | VLC_VAR_DOINHERIT ) )
245 return /* VLC_xxx */;
248 /* Now parse options and set value */
249 for(; cfg; cfg = cfg->p_next )
252 vlc_bool_t b_yes = VLC_TRUE;
253 vlc_bool_t b_once = VLC_FALSE;
254 module_config_t *p_conf;
258 if( cfg->psz_name == NULL || *cfg->psz_name == '\0' )
261 for( i = 0; ppsz_options[i] != NULL; i++ )
263 if( !strcmp( ppsz_options[i], cfg->psz_name ) )
267 if( ( !strncmp( cfg->psz_name, "no-", 3 ) &&
268 !strcmp( ppsz_options[i], cfg->psz_name + 3 ) ) ||
269 ( !strncmp( cfg->psz_name, "no", 2 ) &&
270 !strcmp( ppsz_options[i], cfg->psz_name + 2 ) ) )
276 if( *ppsz_options[i] == '*' &&
277 !strcmp( &ppsz_options[i][1], cfg->psz_name ) )
285 if( ppsz_options[i] == NULL )
287 msg_Warn( p_this, "option %s is unknown", cfg->psz_name );
292 char name[plen + strlen( ppsz_options[i] )];
293 const char *psz_name = name;
294 snprintf( name, sizeof (name), "%s%s", psz_prefix,
295 b_once ? (ppsz_options[i] + 1) : ppsz_options[i] );
297 /* Check if the option is deprecated */
298 p_conf = config_FindConfig( p_this, name );
300 /* This is basically cut and paste from src/misc/configuration.c
301 * with slight changes */
302 if( p_conf && p_conf->psz_current )
304 if( p_conf->b_strict )
306 msg_Err( p_this, "Option %s is not supported anymore.",
308 /* TODO: this should return an error and end option parsing
309 * ... but doing this would change the VLC API and all the
310 * modules so i'll do it later */
313 msg_Warn( p_this, "Option %s is obsolete. Use %s instead.",
314 p_conf->psz_name, p_conf->psz_current );
315 psz_name = p_conf->psz_current;
317 /* </Check if the option is deprecated> */
319 /* get the type of the variable */
320 msg_Err( p_this, "name = %s", name );
321 i_type = config_GetType( p_this, psz_name );
324 msg_Warn( p_this, "unknown option %s (value=%s)",
325 cfg->psz_name, cfg->psz_value );
329 i_type &= CONFIG_ITEM;
331 if( i_type != VLC_VAR_BOOL && cfg->psz_value == NULL )
333 msg_Warn( p_this, "missing value for option %s", cfg->psz_name );
336 if( i_type != VLC_VAR_STRING && b_once )
338 msg_Warn( p_this, "*option_name need to be a string option" );
347 case VLC_VAR_INTEGER:
348 val.i_int = strtol( cfg->psz_value ? cfg->psz_value : "0",
352 val.f_float = atof( cfg->psz_value ? cfg->psz_value : "0" );
356 val.psz_string = cfg->psz_value;
359 msg_Warn( p_this, "unhandled config var type (%d)", i_type );
360 memset( &val, 0, sizeof( vlc_value_t ) );
367 var_Get( p_this, psz_name, &val2 );
368 if( *val2.psz_string )
370 free( val2.psz_string );
371 msg_Dbg( p_this, "ignoring option %s (not first occurrence)", psz_name );
374 free( val2.psz_string );
376 var_Set( p_this, psz_name, val );
377 msg_Dbg( p_this, "set config option: %s to %s", psz_name, cfg->psz_value );