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 *****************************************************************************/
28 #include <vlc_common.h>
29 #include "../libvlc.h"
32 #ifdef HAVE_GETOPT_LONG
34 # include <getopt.h> /* getopt() */
37 # include "../extras/getopt.h"
40 #include "configuration.h"
41 #include "modules/modules.h"
45 /*****************************************************************************
46 * config_LoadCmdLine: parse command line
47 *****************************************************************************
48 * Parse command line for configuration options.
49 * Now that the module_bank has been initialized, we can dynamically
50 * generate the longopts structure used by getops. We have to do it this way
51 * because we don't know (and don't want to know) in advance the configuration
52 * options used (ie. exported) by each module.
53 *****************************************************************************/
54 int __config_LoadCmdLine( vlc_object_t *p_this, int *pi_argc,
55 const char *ppsz_argv[],
56 bool b_ignore_errors )
58 int i_cmd, i_index, i_opts, i_shortopts, flag, i_verbose = 0;
61 struct option *p_longopts;
63 const char **argv_copy = NULL;
66 module_config_t *pp_shortopts[256];
70 /* When VLC.app is run by double clicking in Mac OS X, the 2nd arg
71 * is the PSN - process serial number (a unique PID-ish thingie)
72 * still ok for real Darwin & when run from command line */
73 if ( (*pi_argc > 1) && (strncmp( ppsz_argv[ 1 ] , "-psn" , 4 ) == 0) )
74 /* for example -psn_0_9306113 */
76 /* GDMF!... I can't do this or else the MacOSX window server will
77 * not pick up the PSN and not register the app and we crash...
78 * hence the following kludge otherwise we'll get confused w/ argv[1]
79 * being an input file name.
80 * As there won't be any more args to parse, just exit. */
81 assert( *pi_argc == 2 );
87 /* List all modules */
88 p_list = vlc_list_find( p_this, VLC_OBJECT_MODULE, FIND_ANYWHERE );
91 * Generate the longopts and shortopts structures used by getopt_long
95 for( i_modules_index = 0; i_modules_index < p_list->i_count;
98 p_parser = (module_t *)p_list->p_values[i_modules_index].p_object ;
100 /* count the number of exported configuration options (to allocate
101 * longopts). We also need to allocate space for two options when
102 * dealing with boolean to allow for --foo and --no-foo */
103 i_opts += p_parser->i_config_items
104 + 2 * p_parser->i_bool_items;
107 p_longopts = malloc( sizeof(struct option) * (i_opts + 1) );
108 if( p_longopts == NULL )
110 vlc_list_release( p_list );
114 psz_shortopts = malloc( sizeof( char ) * (2 * i_opts + 1) );
115 if( psz_shortopts == NULL )
118 vlc_list_release( p_list );
122 /* If we are requested to ignore errors, then we must work on a copy
123 * of the ppsz_argv array, otherwise getopt_long will reorder it for
124 * us, ignoring the arity of the options */
125 if( b_ignore_errors )
127 argv_copy = (const char**)malloc( *pi_argc * sizeof(char *) );
128 if( argv_copy == NULL )
130 free( psz_shortopts );
132 vlc_list_release( p_list );
135 memcpy( argv_copy, ppsz_argv, *pi_argc * sizeof(char *) );
136 ppsz_argv = argv_copy;
140 for( i_index = 0; i_index < 256; i_index++ )
142 pp_shortopts[i_index] = NULL;
145 /* Fill the p_longopts and psz_shortopts structures */
147 for( i_modules_index = 0; i_modules_index < p_list->i_count;
150 module_config_t *p_item, *p_end;
151 p_parser = (module_t *)p_list->p_values[i_modules_index].p_object ;
153 if( !p_parser->i_config_items )
156 for( p_item = p_parser->p_config, p_end = p_item + p_parser->confsize;
161 if( p_item->i_type & CONFIG_HINT )
164 /* Add item to long options */
165 p_longopts[i_index].name = strdup( p_item->psz_name );
166 if( p_longopts[i_index].name == NULL ) continue;
167 p_longopts[i_index].has_arg =
168 (p_item->i_type == CONFIG_ITEM_BOOL)?
169 no_argument : required_argument;
170 p_longopts[i_index].flag = &flag;
171 p_longopts[i_index].val = 0;
174 /* When dealing with bools we also need to add the --no-foo
176 if( p_item->i_type == CONFIG_ITEM_BOOL )
178 char *psz_name = malloc( strlen(p_item->psz_name) + 3 );
179 if( psz_name == NULL ) continue;
180 strcpy( psz_name, "no" );
181 strcat( psz_name, p_item->psz_name );
183 p_longopts[i_index].name = psz_name;
184 p_longopts[i_index].has_arg = no_argument;
185 p_longopts[i_index].flag = &flag;
186 p_longopts[i_index].val = 1;
189 psz_name = malloc( strlen(p_item->psz_name) + 4 );
190 if( psz_name == NULL ) continue;
191 strcpy( psz_name, "no-" );
192 strcat( psz_name, p_item->psz_name );
194 p_longopts[i_index].name = psz_name;
195 p_longopts[i_index].has_arg = no_argument;
196 p_longopts[i_index].flag = &flag;
197 p_longopts[i_index].val = 1;
201 /* If item also has a short option, add it */
202 if( p_item->i_short )
204 pp_shortopts[(int)p_item->i_short] = p_item;
205 psz_shortopts[i_shortopts] = p_item->i_short;
207 if( p_item->i_type != CONFIG_ITEM_BOOL )
209 psz_shortopts[i_shortopts] = ':';
212 if( p_item->i_short == 'v' )
214 psz_shortopts[i_shortopts] = ':';
222 /* We don't need the module list anymore */
223 vlc_list_release( p_list );
225 /* Close the longopts and shortopts structures */
226 memset( &p_longopts[i_index], 0, sizeof(struct option) );
227 psz_shortopts[i_shortopts] = '\0';
230 * Parse the command line options
233 optind = 0; /* set to 0 to tell GNU getopt to reinitialize */
234 while( ( i_cmd = getopt_long( *pi_argc, (char **)ppsz_argv, psz_shortopts,
235 p_longopts, &i_index ) ) != -1 )
237 /* A long option has been recognized */
240 module_config_t *p_conf;
241 char *psz_name = (char *)p_longopts[i_index].name;
243 /* Check if we deal with a --nofoo or --no-foo long option */
244 if( flag ) psz_name += psz_name[2] == '-' ? 3 : 2;
246 /* Store the configuration option */
247 p_conf = config_FindConfig( p_this, psz_name );
250 /* Check if the option is deprecated */
251 if( p_conf->b_removed )
254 "Warning: option --%s no longer exists.\n",
259 if( p_conf->psz_oldname
260 && !strcmp( p_conf->psz_oldname, psz_name) )
263 "%s: option --%s is deprecated. Use --%s instead.\n",
264 b_ignore_errors ? "Warning" : "Error",
265 psz_name, p_conf->psz_name );
266 if( !b_ignore_errors )
269 for( i_index = 0; p_longopts[i_index].name; i_index++ )
270 free( (char *)p_longopts[i_index].name );
273 free( psz_shortopts );
277 psz_name = p_conf->psz_name;
280 switch( p_conf->i_type )
282 case CONFIG_ITEM_STRING:
283 case CONFIG_ITEM_PASSWORD:
284 case CONFIG_ITEM_FILE:
285 case CONFIG_ITEM_DIRECTORY:
286 case CONFIG_ITEM_MODULE:
287 case CONFIG_ITEM_MODULE_LIST:
288 case CONFIG_ITEM_MODULE_LIST_CAT:
289 case CONFIG_ITEM_MODULE_CAT:
290 config_PutPsz( p_this, psz_name, optarg );
292 case CONFIG_ITEM_INTEGER:
293 config_PutInt( p_this, psz_name, strtol(optarg, 0, 0));
295 case CONFIG_ITEM_FLOAT:
296 config_PutFloat( p_this, psz_name, (float)atof(optarg) );
298 case CONFIG_ITEM_KEY:
299 config_PutInt( p_this, psz_name, ConfigStringToKey( optarg ) );
301 case CONFIG_ITEM_BOOL:
302 config_PutInt( p_this, psz_name, !flag );
309 /* A short option has been recognized */
310 if( pp_shortopts[i_cmd] != NULL )
312 switch( pp_shortopts[i_cmd]->i_type )
314 case CONFIG_ITEM_STRING:
315 case CONFIG_ITEM_PASSWORD:
316 case CONFIG_ITEM_FILE:
317 case CONFIG_ITEM_DIRECTORY:
318 case CONFIG_ITEM_MODULE:
319 case CONFIG_ITEM_MODULE_CAT:
320 case CONFIG_ITEM_MODULE_LIST:
321 case CONFIG_ITEM_MODULE_LIST_CAT:
322 config_PutPsz( p_this, pp_shortopts[i_cmd]->psz_name, optarg );
324 case CONFIG_ITEM_INTEGER:
329 if( *optarg == 'v' ) /* eg. -vvv */
332 while( *optarg == 'v' )
340 i_verbose += atoi( optarg ); /* eg. -v2 */
345 i_verbose++; /* -v */
347 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
352 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
353 strtol(optarg, 0, 0) );
356 case CONFIG_ITEM_BOOL:
357 config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name, 1 );
364 /* Internal error: unknown option */
365 if( !b_ignore_errors )
367 fprintf( stderr, "%s: unknown option"
368 " or missing mandatory argument ",
369 p_this->p_libvlc->psz_object_name );
372 fprintf( stderr, "`-%c'\n", optopt );
376 fprintf( stderr, "`%s'\n", ppsz_argv[optind-1] );
378 fprintf( stderr, "Try `%s --help' for more information.\n",
379 p_this->p_libvlc->psz_object_name );
381 for( i_index = 0; p_longopts[i_index].name; i_index++ )
382 free( (char *)p_longopts[i_index].name );
384 free( psz_shortopts );
389 /* Free allocated resources */
390 for( i_index = 0; p_longopts[i_index].name; i_index++ )
391 free( (char *)p_longopts[i_index].name );
393 free( psz_shortopts );