1 /*****************************************************************************
2 * cmdline.c: command line parsing
3 *****************************************************************************
4 * Copyright (C) 2001-2007 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.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 *****************************************************************************/
29 #include "../libvlc.h"
31 #include "vlc_charset.h"
33 #include <errno.h> /* errno */
37 # include <unistd.h> /* getuid() */
40 #ifdef HAVE_GETOPT_LONG
42 # include <getopt.h> /* getopt() */
45 # include "../extras/getopt.h"
48 #if defined(HAVE_GETPWUID)
49 # include <pwd.h> /* getpwuid() */
52 #if defined( HAVE_SYS_STAT_H )
53 # include <sys/stat.h>
55 #if defined( HAVE_SYS_TYPES_H )
56 # include <sys/types.h>
59 # if !defined( UNDER_CE )
65 #include "configuration.h"
66 #include "modules/modules.h"
68 /*****************************************************************************
69 * config_LoadCmdLine: parse command line
70 *****************************************************************************
71 * Parse command line for configuration options.
72 * Now that the module_bank has been initialized, we can dynamically
73 * generate the longopts structure used by getops. We have to do it this way
74 * because we don't know (and don't want to know) in advance the configuration
75 * options used (ie. exported) by each module.
76 *****************************************************************************/
77 int __config_LoadCmdLine( vlc_object_t *p_this, int *pi_argc,
78 const char *ppsz_argv[],
79 vlc_bool_t b_ignore_errors )
81 int i_cmd, i_index, i_opts, i_shortopts, flag, i_verbose = 0;
84 struct option *p_longopts;
88 module_config_t *pp_shortopts[256];
91 /* Set default configuration and copy arguments */
92 p_this->p_libvlc->i_argc = *pi_argc;
93 p_this->p_libvlc->ppsz_argv = ppsz_argv;
96 /* When VLC.app is run by double clicking in Mac OS X, the 2nd arg
97 * is the PSN - process serial number (a unique PID-ish thingie)
98 * still ok for real Darwin & when run from command line */
99 if ( (*pi_argc > 1) && (strncmp( ppsz_argv[ 1 ] , "-psn" , 4 ) == 0) )
100 /* for example -psn_0_9306113 */
102 /* GDMF!... I can't do this or else the MacOSX window server will
103 * not pick up the PSN and not register the app and we crash...
104 * hence the following kludge otherwise we'll get confused w/ argv[1]
105 * being an input file name */
107 ppsz_argv[ 1 ] = NULL;
109 *pi_argc = *pi_argc - 1;
115 /* List all modules */
116 p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
119 * Generate the longopts and shortopts structures used by getopt_long
123 for( i_modules_index = 0; i_modules_index < p_list->i_count;
126 p_parser = (module_t *)p_list->p_values[i_modules_index].p_object ;
128 /* count the number of exported configuration options (to allocate
129 * longopts). We also need to allocate space for two options when
130 * dealing with boolean to allow for --foo and --no-foo */
131 i_opts += p_parser->i_config_items
132 + 2 * p_parser->i_bool_items;
135 p_longopts = malloc( sizeof(struct option) * (i_opts + 1) );
136 if( p_longopts == NULL )
138 msg_Err( p_this, "out of memory" );
139 vlc_list_release( p_list );
143 psz_shortopts = malloc( sizeof( char ) * (2 * i_opts + 1) );
144 if( psz_shortopts == NULL )
146 msg_Err( p_this, "out of memory" );
148 vlc_list_release( p_list );
152 /* If we are requested to ignore errors, then we must work on a copy
153 * of the ppsz_argv array, otherwise getopt_long will reorder it for
154 * us, ignoring the arity of the options */
155 if( b_ignore_errors )
157 ppsz_argv = (const char**)malloc( *pi_argc * sizeof(char *) );
158 if( ppsz_argv == NULL )
160 msg_Err( p_this, "out of memory" );
161 free( psz_shortopts );
163 vlc_list_release( p_list );
166 memcpy( ppsz_argv, p_this->p_libvlc->ppsz_argv,
167 *pi_argc * sizeof(char *) );
171 for( i_index = 0; i_index < 256; i_index++ )
173 pp_shortopts[i_index] = NULL;
176 /* Fill the p_longopts and psz_shortopts structures */
178 for( i_modules_index = 0; i_modules_index < p_list->i_count;
181 module_config_t *p_item, *p_end;
182 p_parser = (module_t *)p_list->p_values[i_modules_index].p_object ;
184 if( !p_parser->i_config_items )
187 for( p_item = p_parser->p_config, p_end = p_item + p_parser->confsize;
192 if( p_item->i_type & CONFIG_HINT )
195 /* Add item to long options */
196 p_longopts[i_index].name = strdup( p_item->psz_name );
197 if( p_longopts[i_index].name == NULL ) continue;
198 p_longopts[i_index].has_arg =
199 (p_item->i_type == CONFIG_ITEM_BOOL)?
200 no_argument : required_argument;
201 p_longopts[i_index].flag = &flag;
202 p_longopts[i_index].val = 0;
205 /* When dealing with bools we also need to add the --no-foo
207 if( p_item->i_type == CONFIG_ITEM_BOOL )
209 char *psz_name = malloc( strlen(p_item->psz_name) + 3 );
210 if( psz_name == NULL ) continue;
211 strcpy( psz_name, "no" );
212 strcat( psz_name, p_item->psz_name );
214 p_longopts[i_index].name = psz_name;
215 p_longopts[i_index].has_arg = no_argument;
216 p_longopts[i_index].flag = &flag;
217 p_longopts[i_index].val = 1;
220 psz_name = malloc( strlen(p_item->psz_name) + 4 );
221 if( psz_name == NULL ) continue;
222 strcpy( psz_name, "no-" );
223 strcat( psz_name, p_item->psz_name );
225 p_longopts[i_index].name = psz_name;
226 p_longopts[i_index].has_arg = no_argument;
227 p_longopts[i_index].flag = &flag;
228 p_longopts[i_index].val = 1;
232 /* If item also has a short option, add it */
233 if( p_item->i_short )
235 pp_shortopts[(int)p_item->i_short] = p_item;
236 psz_shortopts[i_shortopts] = p_item->i_short;
238 if( p_item->i_type != CONFIG_ITEM_BOOL )
240 psz_shortopts[i_shortopts] = ':';
243 if( p_item->i_short == 'v' )
245 psz_shortopts[i_shortopts] = ':';
253 /* We don't need the module list anymore */
254 vlc_list_release( p_list );
256 /* Close the longopts and shortopts structures */
257 memset( &p_longopts[i_index], 0, sizeof(struct option) );
258 psz_shortopts[i_shortopts] = '\0';
261 * Parse the command line options
264 optind = 0; /* set to 0 to tell GNU getopt to reinitialize */
265 while( ( i_cmd = getopt_long( *pi_argc, (char **)ppsz_argv, psz_shortopts,
266 p_longopts, &i_index ) ) != -1 )
268 /* A long option has been recognized */
271 module_config_t *p_conf;
272 char *psz_name = (char *)p_longopts[i_index].name;
274 /* Check if we deal with a --nofoo or --no-foo long option */
275 if( flag ) psz_name += psz_name[2] == '-' ? 3 : 2;
277 /* Store the configuration option */
278 p_conf = config_FindConfig( p_this, psz_name );
281 /* Check if the option is deprecated */
282 if( p_conf->b_removed )
285 "Warning: option --%s no longer exists.\n",
290 if( p_conf->psz_oldname
291 && !strcmp( p_conf->psz_oldname, psz_name) )
294 "%s: option --%s is deprecated. Use --%s instead.\n",
295 b_ignore_errors ? "Warning" : "Error",
296 psz_name, p_conf->psz_name );
297 if( !b_ignore_errors )
300 for( i_index = 0; p_longopts[i_index].name; i_index++ )
301 free( (char *)p_longopts[i_index].name );
304 free( psz_shortopts );
308 psz_name = p_conf->psz_name;
311 switch( p_conf->i_type )
313 case CONFIG_ITEM_STRING:
314 case CONFIG_ITEM_PASSWORD:
315 case CONFIG_ITEM_FILE:
316 case CONFIG_ITEM_DIRECTORY:
317 case CONFIG_ITEM_MODULE:
318 case CONFIG_ITEM_MODULE_LIST:
319 case CONFIG_ITEM_MODULE_LIST_CAT:
320 case CONFIG_ITEM_MODULE_CAT:
321 config_PutPsz( p_this, psz_name, optarg );
323 case CONFIG_ITEM_INTEGER:
324 config_PutInt( p_this, psz_name, strtol(optarg, 0, 0));
326 case CONFIG_ITEM_FLOAT:
327 config_PutFloat( p_this, psz_name, (float)atof(optarg) );
329 case CONFIG_ITEM_KEY:
330 config_PutInt( p_this, psz_name, ConfigStringToKey( optarg ) );
332 case CONFIG_ITEM_BOOL:
333 config_PutInt( p_this, psz_name, !flag );
340 /* A short option has been recognized */
341 if( pp_shortopts[i_cmd] != NULL )
343 switch( pp_shortopts[i_cmd]->i_type )
345 case CONFIG_ITEM_STRING:
346 case CONFIG_ITEM_PASSWORD:
347 case CONFIG_ITEM_FILE:
348 case CONFIG_ITEM_DIRECTORY:
349 case CONFIG_ITEM_MODULE:
350 case CONFIG_ITEM_MODULE_CAT:
351 case CONFIG_ITEM_MODULE_LIST:
352 case CONFIG_ITEM_MODULE_LIST_CAT:
353 config_PutPsz( p_this, pp_shortopts[i_cmd]->psz_name, optarg );
355 case CONFIG_ITEM_INTEGER:
360 if( *optarg == 'v' ) /* eg. -vvv */
363 while( *optarg == 'v' )
371 i_verbose += atoi( optarg ); /* eg. -v2 */
376 i_verbose++; /* -v */
378 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
383 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
384 strtol(optarg, 0, 0) );
387 case CONFIG_ITEM_BOOL:
388 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name, 1 );
395 /* Internal error: unknown option */
396 if( !b_ignore_errors )
398 fprintf( stderr, "%s: unknown option"
399 " or missing mandatory argument ",
400 p_this->p_libvlc->psz_object_name );
403 fprintf( stderr, "`-%c'\n", optopt );
407 fprintf( stderr, "`%s'\n", ppsz_argv[optind-1] );
409 fprintf( stderr, "Try `%s --help' for more information.\n",
410 p_this->p_libvlc->psz_object_name );
412 for( i_index = 0; p_longopts[i_index].name; i_index++ )
413 free( (char *)p_longopts[i_index].name );
415 free( psz_shortopts );
420 /* Free allocated resources */
421 for( i_index = 0; p_longopts[i_index].name; i_index++ )
422 free( (char *)p_longopts[i_index].name );
424 free( psz_shortopts );
425 if( b_ignore_errors ) free( ppsz_argv );