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[vlc] / modules / access / directory.c
1 /*****************************************************************************
2  * directory.c: expands a directory (directory: access plug-in)
3  *****************************************************************************
4  * Copyright (C) 2002-2004 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Derk-Jan Hartman <hartman at videolan dot org>
8  *
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.
13  *
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.
18  *
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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
22  *****************************************************************************/
23
24 /*****************************************************************************
25  * Preamble
26  *****************************************************************************/
27
28 #include <vlc/vlc.h>
29 #include <vlc/input.h>
30 #include <vlc_playlist.h>
31
32 #include <stdlib.h>
33 #include <string.h>
34 #ifdef HAVE_SYS_TYPES_H
35 #   include <sys/types.h>
36 #endif
37 #ifdef HAVE_SYS_STAT_H
38 #   include <sys/stat.h>
39 #endif
40 #ifdef HAVE_ERRNO_H
41 #   include <errno.h>
42 #endif
43 #ifdef HAVE_FCNTL_H
44 #   include <fcntl.h>
45 #endif
46
47 #ifdef HAVE_UNISTD_H
48 #   include <unistd.h>
49 #elif defined( WIN32 ) && !defined( UNDER_CE )
50 #   include <io.h>
51 #elif defined( UNDER_CE )
52 #   define strcoll strcmp
53 #endif
54
55 #ifdef HAVE_DIRENT_H
56 #   include <dirent.h>
57 #endif
58
59 #include "charset.h"
60
61 /*****************************************************************************
62  * Module descriptor
63  *****************************************************************************/
64 static int  Open ( vlc_object_t * );
65 static void Close( vlc_object_t * );
66
67 static int  DemuxOpen ( vlc_object_t * );
68
69 #define RECURSIVE_TEXT N_("Subdirectory behavior")
70 #define RECURSIVE_LONGTEXT N_( \
71         "Select whether subdirectories must be expanded.\n" \
72         "none: subdirectories do not appear in the playlist.\n" \
73         "collapse: subdirectories appear but are expanded on first play.\n" \
74         "expand: all subdirectories are expanded.\n" )
75
76 static char *psz_recursive_list[] = { "none", "collapse", "expand" };
77 static char *psz_recursive_list_text[] = { N_("none"), N_("collapse"),
78                                            N_("expand") };
79
80 #define IGNORE_TEXT N_("Ignore files with these extensions")
81 #define IGNORE_LONGTEXT N_( \
82         "Specify a comma seperated list of file extensions. " \
83         "Files with these extensions will not be added to playlist when opening a directory. " \
84         "This is useful if you add directories that contain mp3 albums for instance." )
85
86 vlc_module_begin();
87     set_category( CAT_INPUT );
88     set_shortname( _("Directory" ) );
89     set_subcategory( SUBCAT_INPUT_ACCESS );
90     set_description( _("Standard filesystem directory input") );
91     set_capability( "access2", 55 );
92     add_shortcut( "directory" );
93     add_shortcut( "dir" );
94     add_string( "recursive", "expand" , NULL, RECURSIVE_TEXT,
95                 RECURSIVE_LONGTEXT, VLC_FALSE );
96       change_string_list( psz_recursive_list, psz_recursive_list_text, 0 );
97 #ifdef HAVE_STRSEP
98     add_string( "ignore-filetypes", "m3u,db,nfo,jpg,gif,sfv,txt,sub,idx,srt,cue",
99                 NULL, IGNORE_TEXT, IGNORE_LONGTEXT, VLC_FALSE );
100 #endif
101     set_callbacks( Open, Close );
102
103     add_submodule();
104         set_description( "Directory EOF");
105         set_capability( "demux2", 0 );
106         add_shortcut( "directory" );
107         set_callbacks( DemuxOpen, NULL );
108 vlc_module_end();
109
110
111 /*****************************************************************************
112  * Local prototypes, constants, structures
113  *****************************************************************************/
114
115 #define MODE_EXPAND 0
116 #define MODE_COLLAPSE 1
117 #define MODE_NONE 2
118
119 static int Read( access_t *, uint8_t *, int );
120 static int ReadNull( access_t *, uint8_t *, int );
121 static int Control( access_t *, int, va_list );
122
123 static int Demux( demux_t *p_demux );
124 static int DemuxControl( demux_t *p_demux, int i_query, va_list args );
125
126
127 static int ReadDir( playlist_t *, char *psz_name, int i_mode, int *pi_pos,
128                     playlist_item_t * );
129
130 /*****************************************************************************
131  * Open: open the directory
132  *****************************************************************************/
133 static int Open( vlc_object_t *p_this )
134 {
135     access_t *p_access = (access_t*)p_this;
136
137 #ifdef HAVE_SYS_STAT_H
138     struct stat stat_info;
139
140     if( ( stat( p_access->psz_path, &stat_info ) == -1 ) ||
141         !S_ISDIR( stat_info.st_mode ) )
142
143 #elif defined(WIN32)
144     int i_ret;
145
146 #   ifdef UNICODE
147     wchar_t psz_path[MAX_PATH];
148     mbstowcs( psz_path, p_access->psz_path, MAX_PATH );
149     psz_path[MAX_PATH-1] = 0;
150 #   else
151     char *psz_path = p_access->psz_path;
152 #   endif /* UNICODE */
153
154     i_ret = GetFileAttributes( psz_path );
155     if( i_ret == -1 || !(i_ret & FILE_ATTRIBUTE_DIRECTORY) )
156
157 #else
158     if( strcmp( p_access->psz_access, "dir") &&
159         strcmp( p_access->psz_access, "directory") )
160 #endif
161     {
162         return VLC_EGENERIC;
163     }
164
165     p_access->pf_read  = Read;
166     p_access->pf_block = NULL;
167     p_access->pf_seek  = NULL;
168     p_access->pf_control= Control;
169
170     /* Force a demux */
171     p_access->psz_demux = strdup( "directory" );
172
173     return VLC_SUCCESS;
174 }
175
176 /*****************************************************************************
177  * Close: close the target
178  *****************************************************************************/
179 static void Close( vlc_object_t * p_this )
180 {
181 }
182
183 /*****************************************************************************
184  * ReadNull: read the directory
185  *****************************************************************************/
186 static int ReadNull( access_t *p_access, uint8_t *p_buffer, int i_len)
187 {
188     /* Return fake data */
189     memset( p_buffer, 0, i_len );
190     return i_len;
191 }
192
193 /*****************************************************************************
194  * Read: read the directory
195  *****************************************************************************/
196 static int Read( access_t *p_access, uint8_t *p_buffer, int i_len)
197 {
198     char *psz_name = NULL;
199     char *psz;
200     int  i_mode, i_pos;
201
202     playlist_item_t *p_item;
203     vlc_bool_t b_play = VLC_FALSE;
204
205     playlist_t *p_playlist =
206         (playlist_t *) vlc_object_find( p_access,
207                                         VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
208
209     if( !p_playlist )
210     {
211         msg_Err( p_access, "can't find playlist" );
212         goto end;
213     }
214
215     /* Remove the ending '/' char */
216     psz_name = strdup( p_access->psz_path );
217     if( psz_name == NULL )
218         goto end;
219
220     if( (psz_name[strlen(psz_name)-1] == '/') ||
221         (psz_name[strlen(psz_name)-1] == '\\') )
222     {
223         psz_name[strlen(psz_name)-1] = '\0';
224     }
225
226     /* Initialize structure */
227     psz = var_CreateGetString( p_access, "recursive" );
228     if( *psz == '\0' || !strncmp( psz, "none" , 4 )  )
229     {
230         i_mode = MODE_NONE;
231     }
232     else if( !strncmp( psz, "collapse", 8 )  )
233     {
234         i_mode = MODE_COLLAPSE;
235     }
236     else
237     {
238         i_mode = MODE_EXPAND;
239     }
240     free( psz );
241
242     /* Make sure we are deleted when we are done */
243     /* The playlist position we will use for the add */
244     i_pos = p_playlist->i_index + 1;
245
246     msg_Dbg( p_access, "opening directory `%s'", psz_name );
247
248     if( &p_playlist->status.p_item->input ==
249         ((input_thread_t *)p_access->p_parent)->input.p_item )
250     {
251         p_item = p_playlist->status.p_item;
252         b_play = VLC_TRUE;
253         msg_Dbg( p_access, "starting directory playback");
254     }
255     else
256     {
257         input_item_t *p_current = ( (input_thread_t*)p_access->p_parent)->
258                                                         input.p_item;
259         p_item = playlist_LockItemGetByInput( p_playlist, p_current );
260         msg_Dbg( p_access, "not starting directory playback");
261         if( !p_item )
262         {
263             msg_Dbg( p_playlist, "unable to find item in playlist");
264             return -1;
265         }
266         b_play = VLC_FALSE;
267     }
268
269     p_item->input.i_type = ITEM_TYPE_DIRECTORY;
270     if( ReadDir( p_playlist, psz_name , i_mode, &i_pos,
271                  p_item ) != VLC_SUCCESS )
272     {
273     }
274 end:
275
276     /* Begin to read the directory */
277     if( b_play )
278     {
279         playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
280                           p_playlist->status.i_view,
281                           p_playlist->status.p_item, NULL );
282     }
283     if( psz_name ) free( psz_name );
284     vlc_object_release( p_playlist );
285
286     /* Return fake data forever */
287     p_access->pf_read = ReadNull;
288     return ReadNull( p_access, p_buffer, i_len );
289 }
290
291 /*****************************************************************************
292  * DemuxOpen:
293  *****************************************************************************/
294 static int Control( access_t *p_access, int i_query, va_list args )
295 {
296     vlc_bool_t   *pb_bool;
297     int          *pi_int;
298     int64_t      *pi_64;
299
300     switch( i_query )
301     {
302         /* */
303         case ACCESS_CAN_SEEK:
304         case ACCESS_CAN_FASTSEEK:
305         case ACCESS_CAN_PAUSE:
306         case ACCESS_CAN_CONTROL_PACE:
307             pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
308             *pb_bool = VLC_FALSE;    /* FIXME */
309             break;
310
311         /* */
312         case ACCESS_GET_MTU:
313             pi_int = (int*)va_arg( args, int * );
314             *pi_int = 0;
315             break;
316
317         case ACCESS_GET_PTS_DELAY:
318             pi_64 = (int64_t*)va_arg( args, int64_t * );
319             *pi_64 = DEFAULT_PTS_DELAY * 1000;
320             break;
321
322         /* */
323         case ACCESS_SET_PAUSE_STATE:
324         case ACCESS_GET_TITLE_INFO:
325         case ACCESS_SET_TITLE:
326         case ACCESS_SET_SEEKPOINT:
327         case ACCESS_SET_PRIVATE_ID_STATE:
328             return VLC_EGENERIC;
329
330         default:
331             msg_Warn( p_access, "unimplemented query in control" );
332             return VLC_EGENERIC;
333     }
334     return VLC_SUCCESS;
335 }
336
337 /*****************************************************************************
338  * DemuxOpen:
339  *****************************************************************************/
340 static int DemuxOpen ( vlc_object_t *p_this )
341 {
342     demux_t *p_demux = (demux_t*)p_this;
343
344     if( strcmp( p_demux->psz_demux, "directory" ) )
345         return VLC_EGENERIC;
346
347     p_demux->pf_demux   = Demux;
348     p_demux->pf_control = DemuxControl;
349     return VLC_SUCCESS;
350 }
351
352 /*****************************************************************************
353  * Demux: EOF
354  *****************************************************************************/
355 static int Demux( demux_t *p_demux )
356 {
357     return 0;
358 }
359 /*****************************************************************************
360  * DemuxControl:
361  *****************************************************************************/
362 static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
363 {
364     return demux2_vaControlHelper( p_demux->s, 0, 0, 0, 1, i_query, args );
365 }
366
367 static int Filter( const struct dirent *foo )
368 {
369     return VLC_TRUE;
370 }
371 /*****************************************************************************
372  * ReadDir: read a directory and add its content to the list
373  *****************************************************************************/
374 static int ReadDir( playlist_t *p_playlist,
375                     char *psz_name, int i_mode, int *pi_position,
376                     playlist_item_t *p_parent )
377 {
378     struct dirent   **pp_dir_content;
379     int             i_dir_content, i;
380     playlist_item_t *p_node;
381
382     /* Build array with ignores */
383 #ifdef HAVE_STRSEP
384     char **ppsz_extensions = 0;
385     int i_extensions = 0;
386     char *psz_ignore = var_CreateGetString( p_playlist, "ignore-filetypes" );
387     if( psz_ignore && *psz_ignore )
388     {
389         char *psz_backup;
390         char *psz_parser = psz_backup = strdup( psz_ignore );
391         int a = 0;
392
393         while( strsep( &psz_parser, "," ) ) i_extensions++;
394         free( psz_backup );
395
396         ppsz_extensions = (char **)malloc( sizeof( char * ) * i_extensions );
397
398         psz_parser = psz_ignore;
399         while( a < i_extensions &&
400                ( ppsz_extensions[a++] = strsep( &psz_parser, "," ) ) );
401     }
402 #endif /* HAVE_STRSEP */
403
404     /* Change the item to a node */
405     if( p_parent->i_children == -1 )
406     {
407         playlist_LockItemToNode( p_playlist,p_parent );
408     }
409
410     /* get the first directory entry */
411     i_dir_content = scandir( psz_name, &pp_dir_content, Filter, alphasort );
412     if( i_dir_content == -1 )
413     {
414         msg_Warn( p_playlist, "Failed to read directory" );
415         return VLC_EGENERIC;
416     }
417     else if( i_dir_content <= 0 )
418     {
419         /* directory is empty */
420         return VLC_SUCCESS;
421     }
422
423     /* While we still have entries in the directory */
424     for( i = 0; i < i_dir_content; i++ )
425     {
426         struct dirent *p_dir_content = pp_dir_content[i];
427         int i_size_entry = strlen( psz_name ) +
428                            strlen( p_dir_content->d_name ) + 2;
429         char *psz_uri = (char *)malloc( sizeof(char) * i_size_entry );
430
431         sprintf( psz_uri, "%s/%s", psz_name, p_dir_content->d_name );
432
433         /* if it starts with '.' then forget it */
434         if( p_dir_content->d_name[0] != '.' )
435         {
436 #if defined( S_ISDIR )
437             struct stat stat_data;
438             stat( psz_uri, &stat_data );
439             if( S_ISDIR(stat_data.st_mode) && i_mode != MODE_COLLAPSE )
440 #elif defined( DT_DIR )
441             if( ( p_dir_content->d_type & DT_DIR ) && i_mode != MODE_COLLAPSE )
442 #else
443             if( 0 )
444 #endif
445             {
446                 if( i_mode == MODE_NONE )
447                 {
448                     msg_Dbg( p_playlist, "Skipping subdirectory %s", psz_uri );
449                     free( psz_uri );
450                     continue;
451                 }
452                 else if( i_mode == MODE_EXPAND )
453                 {
454                     char *psz_newname;
455                     msg_Dbg(p_playlist, "Reading subdirectory %s", psz_uri );
456
457                     if( !strncmp( psz_uri, psz_name, strlen( psz_name ) ) )
458                     {
459                         char *psz_subdir = psz_uri;
460                         /* Skip the parent path + the separator */
461                         psz_subdir += strlen( psz_name ) + 1;
462                         psz_newname = vlc_fix_readdir_charset(
463                                                 p_playlist, psz_subdir );
464                     }
465                     else
466                     {
467                         psz_newname = vlc_fix_readdir_charset(
468                                                 p_playlist, psz_name );
469                     }
470                     p_node = playlist_NodeCreate( p_playlist,
471                                        p_parent->pp_parents[0]->i_view,
472                                        psz_newname, p_parent );
473
474                     playlist_CopyParents(  p_parent, p_node );
475
476                     p_node->input.i_type = ITEM_TYPE_DIRECTORY;
477
478                     if( ReadDir( p_playlist, psz_uri , MODE_EXPAND,
479                                  pi_position, p_node ) != VLC_SUCCESS )
480                     {
481                         return VLC_EGENERIC;
482                     }
483
484                     free( psz_newname );
485                 }
486             }
487             else
488             {
489                 playlist_item_t *p_item;
490                 char *psz_tmp1, *psz_tmp2;
491
492 #ifdef HAVE_STRSEP
493                 if( i_extensions > 0 )
494                 {
495                     char *psz_dot = strrchr( p_dir_content->d_name, '.' );
496                     if( psz_dot++ && *psz_dot )
497                     {
498                         int a;
499                         for( a = 0; a < i_extensions; a++ )
500                         {
501                             if( !strcmp( psz_dot, ppsz_extensions[a] ) )
502                                 break;
503                         }
504                         if( a < i_extensions )
505                         {
506                             msg_Dbg( p_playlist, "Ignoring file %s", psz_uri );
507                             free( psz_uri );
508                             continue;
509                         }
510                     }
511                 }
512 #endif /* HAVE_STRSEP */
513
514                 psz_tmp1 = vlc_fix_readdir_charset( VLC_OBJECT(p_playlist),
515                                                     psz_uri );
516                 psz_tmp2 = vlc_fix_readdir_charset( VLC_OBJECT(p_playlist),
517                                                     p_dir_content->d_name );
518
519                 p_item = playlist_ItemNewWithType( VLC_OBJECT(p_playlist),
520                         psz_tmp1, psz_tmp2, ITEM_TYPE_VFILE );
521                 playlist_NodeAddItem( p_playlist,p_item,
522                                       p_parent->pp_parents[0]->i_view,
523                                       p_parent,
524                                       PLAYLIST_APPEND, PLAYLIST_END );
525
526                 playlist_CopyParents( p_parent, p_item );
527             }
528         }
529         free( psz_uri );
530     }
531
532 #ifdef HAVE_STRSEP
533     if( ppsz_extensions ) free( ppsz_extensions );
534     if( psz_ignore ) free( psz_ignore );
535 #endif /* HAVE_STRSEP */
536
537     free( pp_dir_content );
538     return VLC_SUCCESS;
539 }