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 */
40 # include <unistd.h> /* getuid() */
43 #ifdef HAVE_GETOPT_LONG
45 # include <getopt.h> /* getopt() */
48 # include "../extras/getopt.h"
51 #if defined(HAVE_GETPWUID)
52 # include <pwd.h> /* getpwuid() */
55 #if defined( HAVE_SYS_STAT_H )
56 # include <sys/stat.h>
58 #if defined( HAVE_SYS_TYPES_H )
59 # include <sys/types.h>
62 # if !defined( UNDER_CE )
68 #include "configuration.h"
69 #include "modules/modules.h"
71 /*****************************************************************************
72 * config_LoadCmdLine: parse command line
73 *****************************************************************************
74 * Parse command line for configuration options.
75 * Now that the module_bank has been initialized, we can dynamically
76 * generate the longopts structure used by getops. We have to do it this way
77 * because we don't know (and don't want to know) in advance the configuration
78 * options used (ie. exported) by each module.
79 *****************************************************************************/
80 int __config_LoadCmdLine( vlc_object_t *p_this, int *pi_argc,
81 const char *ppsz_argv[],
82 vlc_bool_t b_ignore_errors )
84 int i_cmd, i_index, i_opts, i_shortopts, flag, i_verbose = 0;
87 struct option *p_longopts;
91 module_config_t *pp_shortopts[256];
94 /* Set default configuration and copy arguments */
95 p_this->p_libvlc->i_argc = *pi_argc;
96 p_this->p_libvlc->ppsz_argv = ppsz_argv;
99 /* When VLC.app is run by double clicking in Mac OS X, the 2nd arg
100 * is the PSN - process serial number (a unique PID-ish thingie)
101 * still ok for real Darwin & when run from command line */
102 if ( (*pi_argc > 1) && (strncmp( ppsz_argv[ 1 ] , "-psn" , 4 ) == 0) )
103 /* for example -psn_0_9306113 */
105 /* GDMF!... I can't do this or else the MacOSX window server will
106 * not pick up the PSN and not register the app and we crash...
107 * hence the following kludge otherwise we'll get confused w/ argv[1]
108 * being an input file name */
110 ppsz_argv[ 1 ] = NULL;
112 *pi_argc = *pi_argc - 1;
118 /* List all modules */
119 p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
122 * Generate the longopts and shortopts structures used by getopt_long
126 for( i_modules_index = 0; i_modules_index < p_list->i_count;
129 p_parser = (module_t *)p_list->p_values[i_modules_index].p_object ;
131 /* count the number of exported configuration options (to allocate
132 * longopts). We also need to allocate space for two options when
133 * dealing with boolean to allow for --foo and --no-foo */
134 i_opts += p_parser->i_config_items
135 + 2 * p_parser->i_bool_items;
138 p_longopts = malloc( sizeof(struct option) * (i_opts + 1) );
139 if( p_longopts == NULL )
141 msg_Err( p_this, "out of memory" );
142 vlc_list_release( p_list );
146 psz_shortopts = malloc( sizeof( char ) * (2 * i_opts + 1) );
147 if( psz_shortopts == NULL )
149 msg_Err( p_this, "out of memory" );
151 vlc_list_release( p_list );
155 /* If we are requested to ignore errors, then we must work on a copy
156 * of the ppsz_argv array, otherwise getopt_long will reorder it for
157 * us, ignoring the arity of the options */
158 if( b_ignore_errors )
160 ppsz_argv = (const char**)malloc( *pi_argc * sizeof(char *) );
161 if( ppsz_argv == NULL )
163 msg_Err( p_this, "out of memory" );
164 free( psz_shortopts );
166 vlc_list_release( p_list );
169 memcpy( ppsz_argv, p_this->p_libvlc->ppsz_argv,
170 *pi_argc * sizeof(char *) );
174 for( i_index = 0; i_index < 256; i_index++ )
176 pp_shortopts[i_index] = NULL;
179 /* Fill the p_longopts and psz_shortopts structures */
181 for( i_modules_index = 0; i_modules_index < p_list->i_count;
184 module_config_t *p_item, *p_end;
185 p_parser = (module_t *)p_list->p_values[i_modules_index].p_object ;
187 if( !p_parser->i_config_items )
190 for( p_item = p_parser->p_config, p_end = p_item + p_parser->confsize;
195 if( p_item->i_type & CONFIG_HINT )
198 /* Add item to long options */
199 p_longopts[i_index].name = strdup( p_item->psz_name );
200 if( p_longopts[i_index].name == NULL ) continue;
201 p_longopts[i_index].has_arg =
202 (p_item->i_type == CONFIG_ITEM_BOOL)?
203 no_argument : required_argument;
204 p_longopts[i_index].flag = &flag;
205 p_longopts[i_index].val = 0;
208 /* When dealing with bools we also need to add the --no-foo
210 if( p_item->i_type == CONFIG_ITEM_BOOL )
212 char *psz_name = malloc( strlen(p_item->psz_name) + 3 );
213 if( psz_name == NULL ) continue;
214 strcpy( psz_name, "no" );
215 strcat( psz_name, p_item->psz_name );
217 p_longopts[i_index].name = psz_name;
218 p_longopts[i_index].has_arg = no_argument;
219 p_longopts[i_index].flag = &flag;
220 p_longopts[i_index].val = 1;
223 psz_name = malloc( strlen(p_item->psz_name) + 4 );
224 if( psz_name == NULL ) continue;
225 strcpy( psz_name, "no-" );
226 strcat( psz_name, p_item->psz_name );
228 p_longopts[i_index].name = psz_name;
229 p_longopts[i_index].has_arg = no_argument;
230 p_longopts[i_index].flag = &flag;
231 p_longopts[i_index].val = 1;
235 /* If item also has a short option, add it */
236 if( p_item->i_short )
238 pp_shortopts[(int)p_item->i_short] = p_item;
239 psz_shortopts[i_shortopts] = p_item->i_short;
241 if( p_item->i_type != CONFIG_ITEM_BOOL )
243 psz_shortopts[i_shortopts] = ':';
246 if( p_item->i_short == 'v' )
248 psz_shortopts[i_shortopts] = ':';
256 /* We don't need the module list anymore */
257 vlc_list_release( p_list );
259 /* Close the longopts and shortopts structures */
260 memset( &p_longopts[i_index], 0, sizeof(struct option) );
261 psz_shortopts[i_shortopts] = '\0';
264 * Parse the command line options
267 optind = 0; /* set to 0 to tell GNU getopt to reinitialize */
268 while( ( i_cmd = getopt_long( *pi_argc, (char **)ppsz_argv, psz_shortopts,
269 p_longopts, &i_index ) ) != -1 )
271 /* A long option has been recognized */
274 module_config_t *p_conf;
275 char *psz_name = (char *)p_longopts[i_index].name;
277 /* Check if we deal with a --nofoo or --no-foo long option */
278 if( flag ) psz_name += psz_name[2] == '-' ? 3 : 2;
280 /* Store the configuration option */
281 p_conf = config_FindConfig( p_this, psz_name );
284 /* Check if the option is deprecated */
285 if( p_conf->b_removed )
288 "Warning: option --%s no longer exists.\n",
293 if( p_conf->psz_oldname
294 && !strcmp( p_conf->psz_oldname, psz_name) )
297 "%s: option --%s is deprecated. Use --%s instead.\n",
298 b_ignore_errors ? "Warning" : "Error",
299 psz_name, p_conf->psz_name );
300 if( !b_ignore_errors )
303 for( i_index = 0; p_longopts[i_index].name; i_index++ )
304 free( (char *)p_longopts[i_index].name );
307 free( psz_shortopts );
311 psz_name = p_conf->psz_name;
314 switch( p_conf->i_type )
316 case CONFIG_ITEM_STRING:
317 case CONFIG_ITEM_PASSWORD:
318 case CONFIG_ITEM_FILE:
319 case CONFIG_ITEM_DIRECTORY:
320 case CONFIG_ITEM_MODULE:
321 case CONFIG_ITEM_MODULE_LIST:
322 case CONFIG_ITEM_MODULE_LIST_CAT:
323 case CONFIG_ITEM_MODULE_CAT:
324 config_PutPsz( p_this, psz_name, optarg );
326 case CONFIG_ITEM_INTEGER:
327 config_PutInt( p_this, psz_name, strtol(optarg, 0, 0));
329 case CONFIG_ITEM_FLOAT:
330 config_PutFloat( p_this, psz_name, (float)atof(optarg) );
332 case CONFIG_ITEM_KEY:
333 config_PutInt( p_this, psz_name, ConfigStringToKey( optarg ) );
335 case CONFIG_ITEM_BOOL:
336 config_PutInt( p_this, psz_name, !flag );
343 /* A short option has been recognized */
344 if( pp_shortopts[i_cmd] != NULL )
346 switch( pp_shortopts[i_cmd]->i_type )
348 case CONFIG_ITEM_STRING:
349 case CONFIG_ITEM_PASSWORD:
350 case CONFIG_ITEM_FILE:
351 case CONFIG_ITEM_DIRECTORY:
352 case CONFIG_ITEM_MODULE:
353 case CONFIG_ITEM_MODULE_CAT:
354 case CONFIG_ITEM_MODULE_LIST:
355 case CONFIG_ITEM_MODULE_LIST_CAT:
356 config_PutPsz( p_this, pp_shortopts[i_cmd]->psz_name, optarg );
358 case CONFIG_ITEM_INTEGER:
363 if( *optarg == 'v' ) /* eg. -vvv */
366 while( *optarg == 'v' )
374 i_verbose += atoi( optarg ); /* eg. -v2 */
379 i_verbose++; /* -v */
381 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
386 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
387 strtol(optarg, 0, 0) );
390 case CONFIG_ITEM_BOOL:
391 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name, 1 );
398 /* Internal error: unknown option */
399 if( !b_ignore_errors )
401 fprintf( stderr, "%s: unknown option"
402 " or missing mandatory argument ",
403 p_this->p_libvlc->psz_object_name );
406 fprintf( stderr, "`-%c'\n", optopt );
410 fprintf( stderr, "`%s'\n", ppsz_argv[optind-1] );
412 fprintf( stderr, "Try `%s --help' for more information.\n",
413 p_this->p_libvlc->psz_object_name );
415 for( i_index = 0; p_longopts[i_index].name; i_index++ )
416 free( (char *)p_longopts[i_index].name );
418 free( psz_shortopts );
423 /* Free allocated resources */
424 for( i_index = 0; p_longopts[i_index].name; i_index++ )
425 free( (char *)p_longopts[i_index].name );
427 free( psz_shortopts );
428 if( b_ignore_errors ) free( ppsz_argv );