cmdline.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:14k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * cmdline.c: command line parsing
- *****************************************************************************
- * Copyright (C) 2001-2007 the VideoLAN team
- * $Id: 264f84ed2f9670e21e734439c44b84aeb67b1ad1 $
- *
- * Authors: Gildas Bazin <gbazin@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include "../libvlc.h"
- #include <vlc_keys.h>
- #include <vlc_charset.h>
- #ifdef HAVE_GETOPT_LONG
- # ifdef HAVE_GETOPT_H
- # include <getopt.h> /* getopt() */
- # endif
- #else
- # include "../extras/getopt.h"
- #endif
- #include "configuration.h"
- #include "modules/modules.h"
- #include <assert.h>
- /*****************************************************************************
- * config_LoadCmdLine: parse command line
- *****************************************************************************
- * Parse command line for configuration options.
- * Now that the module_bank has been initialized, we can dynamically
- * generate the longopts structure used by getops. We have to do it this way
- * because we don't know (and don't want to know) in advance the configuration
- * options used (ie. exported) by each module.
- *****************************************************************************/
- int __config_LoadCmdLine( vlc_object_t *p_this, int *pi_argc,
- const char *ppsz_argv[],
- bool b_ignore_errors )
- {
- int i_cmd, i_index, i_opts, i_shortopts, flag, i_verbose = 0;
- module_t *p_parser;
- struct option *p_longopts;
- const char **argv_copy = NULL;
- /* Short options */
- module_config_t *pp_shortopts[256];
- char *psz_shortopts;
- #ifdef __APPLE__
- /* When VLC.app is run by double clicking in Mac OS X, the 2nd arg
- * is the PSN - process serial number (a unique PID-ish thingie)
- * still ok for real Darwin & when run from command line */
- if ( (*pi_argc > 1) && (strncmp( ppsz_argv[ 1 ] , "-psn" , 4 ) == 0) )
- /* for example -psn_0_9306113 */
- {
- /* GDMF!... I can't do this or else the MacOSX window server will
- * not pick up the PSN and not register the app and we crash...
- * hence the following kludge otherwise we'll get confused w/ argv[1]
- * being an input file name.
- * As there won't be any more args to parse, just exit. */
- assert( *pi_argc == 2 );
- *pi_argc = 1;
- return 0;
- }
- #endif
- /* List all modules */
- module_t **list = module_list_get (NULL);
- /*
- * Generate the longopts and shortopts structures used by getopt_long
- */
- i_opts = 0;
- for (size_t i = 0; (p_parser = list[i]) != NULL; i++)
- /* count the number of exported configuration options (to allocate
- * longopts). We also need to allocate space for two options when
- * dealing with boolean to allow for --foo and --no-foo */
- i_opts += p_parser->i_config_items + 2 * p_parser->i_bool_items;
- p_longopts = malloc( sizeof(struct option) * (i_opts + 1) );
- if( p_longopts == NULL )
- {
- module_list_free (list);
- return -1;
- }
- psz_shortopts = malloc( sizeof( char ) * (2 * i_opts + 1) );
- if( psz_shortopts == NULL )
- {
- free( p_longopts );
- module_list_free (list);
- return -1;
- }
- /* If we are requested to ignore errors, then we must work on a copy
- * of the ppsz_argv array, otherwise getopt_long will reorder it for
- * us, ignoring the arity of the options */
- if( b_ignore_errors )
- {
- argv_copy = (const char**)malloc( *pi_argc * sizeof(char *) );
- if( argv_copy == NULL )
- {
- free( psz_shortopts );
- free( p_longopts );
- module_list_free (list);
- return -1;
- }
- memcpy( argv_copy, ppsz_argv, *pi_argc * sizeof(char *) );
- ppsz_argv = argv_copy;
- }
- i_shortopts = 0;
- for( i_index = 0; i_index < 256; i_index++ )
- {
- pp_shortopts[i_index] = NULL;
- }
- /* Fill the p_longopts and psz_shortopts structures */
- i_index = 0;
- for (size_t i = 0; (p_parser = list[i]) != NULL; i++)
- {
- module_config_t *p_item, *p_end;
- if( !p_parser->i_config_items )
- continue;
- for( p_item = p_parser->p_config, p_end = p_item + p_parser->confsize;
- p_item < p_end;
- p_item++ )
- {
- /* Ignore hints */
- if( p_item->i_type & CONFIG_HINT )
- continue;
- /* Add item to long options */
- p_longopts[i_index].name = strdup( p_item->psz_name );
- if( p_longopts[i_index].name == NULL ) continue;
- p_longopts[i_index].has_arg =
- (p_item->i_type == CONFIG_ITEM_BOOL) ? no_argument :
- #ifndef __APPLE__
- required_argument;
- #else
- /* It seems that required_argument is broken on Darwin.
- * Radar ticket #6113829 */
- optional_argument;
- #endif
- p_longopts[i_index].flag = &flag;
- p_longopts[i_index].val = 0;
- i_index++;
- /* When dealing with bools we also need to add the --no-foo
- * option */
- if( p_item->i_type == CONFIG_ITEM_BOOL )
- {
- char *psz_name = malloc( strlen(p_item->psz_name) + 3 );
- if( psz_name == NULL ) continue;
- strcpy( psz_name, "no" );
- strcat( psz_name, p_item->psz_name );
- p_longopts[i_index].name = psz_name;
- p_longopts[i_index].has_arg = no_argument;
- p_longopts[i_index].flag = &flag;
- p_longopts[i_index].val = 1;
- i_index++;
- psz_name = malloc( strlen(p_item->psz_name) + 4 );
- if( psz_name == NULL ) continue;
- strcpy( psz_name, "no-" );
- strcat( psz_name, p_item->psz_name );
- p_longopts[i_index].name = psz_name;
- p_longopts[i_index].has_arg = no_argument;
- p_longopts[i_index].flag = &flag;
- p_longopts[i_index].val = 1;
- i_index++;
- }
- /* If item also has a short option, add it */
- if( p_item->i_short )
- {
- pp_shortopts[(int)p_item->i_short] = p_item;
- psz_shortopts[i_shortopts] = p_item->i_short;
- i_shortopts++;
- if( p_item->i_type != CONFIG_ITEM_BOOL )
- {
- psz_shortopts[i_shortopts] = ':';
- i_shortopts++;
- if( p_item->i_short == 'v' )
- {
- psz_shortopts[i_shortopts] = ':';
- i_shortopts++;
- }
- }
- }
- }
- }
- /* We don't need the module list anymore */
- module_list_free( list );
- /* Close the longopts and shortopts structures */
- memset( &p_longopts[i_index], 0, sizeof(struct option) );
- psz_shortopts[i_shortopts] = ' ';
- /*
- * Parse the command line options
- */
- opterr = 0;
- optind = 0; /* set to 0 to tell GNU getopt to reinitialize */
- while( ( i_cmd = getopt_long( *pi_argc, (char **)ppsz_argv, psz_shortopts,
- p_longopts, &i_index ) ) != -1 )
- {
- /* A long option has been recognized */
- if( i_cmd == 0 )
- {
- module_config_t *p_conf;
- char *psz_name = (char *)p_longopts[i_index].name;
- /* Check if we deal with a --nofoo or --no-foo long option */
- if( flag ) psz_name += psz_name[2] == '-' ? 3 : 2;
- /* Store the configuration option */
- p_conf = config_FindConfig( p_this, psz_name );
- if( p_conf )
- {
- /* Check if the option is deprecated */
- if( p_conf->b_removed )
- {
- fprintf(stderr,
- "Warning: option --%s no longer exists.n",
- psz_name);
- continue;
- }
- if( p_conf->psz_oldname
- && !strcmp( p_conf->psz_oldname, psz_name) )
- {
- fprintf( stderr,
- "%s: option --%s is deprecated. Use --%s instead.n",
- b_ignore_errors ? "Warning" : "Error",
- psz_name, p_conf->psz_name );
- if( !b_ignore_errors )
- {
- /*free */
- for( i_index = 0; p_longopts[i_index].name; i_index++ )
- free( (char *)p_longopts[i_index].name );
- free( p_longopts );
- free( psz_shortopts );
- return -1;
- }
- psz_name = p_conf->psz_name;
- }
- #ifdef __APPLE__
- if( p_conf->i_type != CONFIG_ITEM_BOOL && !optarg )
- {
- fprintf( stderr, "Warning: missing argument for option --%sn", p_conf->psz_name );
- fprintf( stderr, "Try specifying options as '--optionname=value' instead of '--optionname value'n" );
- continue;
- }
- #endif
- switch( p_conf->i_type )
- {
- case CONFIG_ITEM_STRING:
- case CONFIG_ITEM_PASSWORD:
- case CONFIG_ITEM_FILE:
- case CONFIG_ITEM_DIRECTORY:
- case CONFIG_ITEM_MODULE:
- case CONFIG_ITEM_MODULE_LIST:
- case CONFIG_ITEM_MODULE_LIST_CAT:
- case CONFIG_ITEM_MODULE_CAT:
- config_PutPsz( p_this, psz_name, optarg );
- break;
- case CONFIG_ITEM_INTEGER:
- config_PutInt( p_this, psz_name, strtol(optarg, 0, 0));
- break;
- case CONFIG_ITEM_FLOAT:
- config_PutFloat( p_this, psz_name, us_atof(optarg) );
- break;
- case CONFIG_ITEM_KEY:
- config_PutInt( p_this, psz_name, ConfigStringToKey( optarg ) );
- break;
- case CONFIG_ITEM_BOOL:
- config_PutInt( p_this, psz_name, !flag );
- break;
- }
- continue;
- }
- }
- /* A short option has been recognized */
- if( pp_shortopts[i_cmd] != NULL )
- {
- switch( pp_shortopts[i_cmd]->i_type )
- {
- case CONFIG_ITEM_STRING:
- case CONFIG_ITEM_PASSWORD:
- case CONFIG_ITEM_FILE:
- case CONFIG_ITEM_DIRECTORY:
- case CONFIG_ITEM_MODULE:
- case CONFIG_ITEM_MODULE_CAT:
- case CONFIG_ITEM_MODULE_LIST:
- case CONFIG_ITEM_MODULE_LIST_CAT:
- config_PutPsz( p_this, pp_shortopts[i_cmd]->psz_name, optarg );
- break;
- case CONFIG_ITEM_INTEGER:
- if( i_cmd == 'v' )
- {
- if( optarg )
- {
- if( *optarg == 'v' ) /* eg. -vvv */
- {
- i_verbose++;
- while( *optarg == 'v' )
- {
- i_verbose++;
- optarg++;
- }
- }
- else
- {
- i_verbose += atoi( optarg ); /* eg. -v2 */
- }
- }
- else
- {
- i_verbose++; /* -v */
- }
- config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
- i_verbose );
- }
- else
- {
- config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name,
- strtol(optarg, 0, 0) );
- }
- break;
- case CONFIG_ITEM_BOOL:
- config_PutInt( p_this, pp_shortopts[i_cmd]->psz_name, 1 );
- break;
- }
- continue;
- }
- /* Internal error: unknown option */
- if( !b_ignore_errors )
- {
- fputs( "vlc: unknown option"
- " or missing mandatory argument ", stderr );
- if( optopt )
- {
- fprintf( stderr, "`-%c'n", optopt );
- }
- else
- {
- fprintf( stderr, "`%s'n", ppsz_argv[optind-1] );
- }
- fputs( "Try `vlc --help' for more information.n", stderr );
- for( i_index = 0; p_longopts[i_index].name; i_index++ )
- free( (char *)p_longopts[i_index].name );
- free( p_longopts );
- free( psz_shortopts );
- return -1;
- }
- }
- /* Free allocated resources */
- for( i_index = 0; p_longopts[i_index].name; i_index++ )
- free( (char *)p_longopts[i_index].name );
- free( p_longopts );
- free( psz_shortopts );
- free( argv_copy );
- return 0;
- }