directory.c 11.1 KB
Newer Older
1 2 3 4
/*****************************************************************************
 * directory.c: expands a directory (directory: access plug-in)
 *****************************************************************************
 * Copyright (C) 2001, 2002 VideoLAN
Gildas Bazin's avatar
Gildas Bazin committed
5
 * $Id: directory.c,v 1.6 2004/02/17 13:13:31 gbazin Exp $
6 7 8 9 10 11 12
 *
 * Authors: Derk-Jan Hartman <thedj@users.sourceforge.net>
 *
 * 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.
13
 *
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <vlc/vlc.h>
#include <vlc/input.h>

#include <stdlib.h>
#include <string.h>
#ifdef HAVE_SYS_TYPES_H
#   include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#   include <sys/stat.h>
#endif
#ifdef HAVE_ERRNO_H
#   include <errno.h>
#endif
#ifdef HAVE_FCNTL_H
#   include <fcntl.h>
#endif

#ifdef HAVE_UNISTD_H
#   include <unistd.h>
#elif defined( WIN32 ) && !defined( UNDER_CE )
#   include <io.h>
#endif

#if (!defined( WIN32 ) || defined(__MINGW32__))
/* Mingw has its own version of dirent */
#   include <dirent.h>
#endif

/*****************************************************************************
 * Constants and structures
 *****************************************************************************/
59 60 61 62 63
#define MAX_DIR_SIZE 100000

#define MODE_EXPAND 0
#define MODE_COLLAPSE 1
#define MODE_NONE 2
64

Gildas Bazin's avatar
 
Gildas Bazin committed
65
typedef struct input_directory_s
66
{
Gildas Bazin's avatar
 
Gildas Bazin committed
67 68 69
    char   p_dir_buffer[MAX_DIR_SIZE];
    int    i_buf_pos;
    int    i_buf_length;
70
    int    i_pos;
Gildas Bazin's avatar
 
Gildas Bazin committed
71
} input_directory_t;
72 73 74 75 76 77 78 79 80


/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static int     Open   ( vlc_object_t * );
static void    Close  ( vlc_object_t * );

static ssize_t Read   ( input_thread_t *, byte_t *, size_t );
81
int ReadDir( input_thread_t *p_input, char *psz_name , int i_mode );
82 83 84 85

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
86 87 88 89 90 91 92 93 94 95
#define RECURSIVE_TEXT N_("Includes subdirectories ?")
#define RECURSIVE_LONGTEXT N_( \
        "Select whether subdirectories must be expanded.\n" \
        "none : subdirectories do not appear in the playlist.\n" \
        "collapse : subdirectories appear but are expanded on first play.\n" \
        "expand : all subdirectories are expanded.\n" )

static char *psz_recursive_list[] = { "none", "collapse", "expand" };
static char *psz_recursive_list_text[] = { N_("none"), N_("collapse"),
                                           N_("expand") };
96 97

vlc_module_begin();
Gildas Bazin's avatar
 
Gildas Bazin committed
98
    set_description( _("Standard filesystem directory input") );
99 100 101
    set_capability( "access", 55 );
    add_shortcut( "directory" );
    add_shortcut( "dir" );
102 103
    add_string( "recursive", "expand" , NULL, RECURSIVE_TEXT,
                RECURSIVE_LONGTEXT, VLC_FALSE );
Gildas Bazin's avatar
Gildas Bazin committed
104
      change_string_list( psz_recursive_list, psz_recursive_list_text, 0 );
105 106 107 108 109 110 111 112 113
    set_callbacks( Open, Close );
vlc_module_end();


/*****************************************************************************
 * Open: open the directory
 *****************************************************************************/
static int Open( vlc_object_t *p_this )
{
Gildas Bazin's avatar
 
Gildas Bazin committed
114 115 116
    input_thread_t *            p_input = (input_thread_t *)p_this;
    char *                      psz_name;
    input_directory_t *         p_access_data;
117 118
    char *                      psz_mode;
    int                         i_mode;
119
#ifdef HAVE_SYS_STAT_H
Gildas Bazin's avatar
 
Gildas Bazin committed
120
    struct stat                 stat_info;
121
#endif
122

123 124 125 126 127 128 129 130 131 132 133 134
    /* Initialize access plug-in structures. */
    if( p_input->i_mtu == 0 )
    {
        /* Improve speed. */
        p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
    }

    p_input->pf_read = Read;
    p_input->pf_set_program = NULL;
    p_input->pf_set_area = NULL;
    p_input->pf_seek = NULL;

Gildas Bazin's avatar
 
Gildas Bazin committed
135 136 137
    /* Remove the ending '/' char */
    psz_name = strdup( p_input->psz_name );
    if( psz_name == NULL )
138
        return VLC_EGENERIC;
Gildas Bazin's avatar
 
Gildas Bazin committed
139 140 141 142 143

    if( (psz_name[strlen(psz_name)-1] == '/') ||
        (psz_name[strlen(psz_name)-1] == '\\') )
    {
        psz_name[strlen(psz_name)-1] = '\0';
144 145
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
146 147 148 149 150 151
#ifdef HAVE_SYS_STAT_H
    if( ( stat( psz_name, &stat_info ) == -1 ) ||
        !S_ISDIR( stat_info.st_mode ) )
#else
    if( !p_input->psz_access || strcmp(p_input->psz_access, "dir") )
#endif
152
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
153 154
        free( psz_name );
        return VLC_EGENERIC;
155 156
    }

157
    /* Initialize structure */
158
    msg_Dbg( p_input, "opening directory `%s'", psz_name );
Gildas Bazin's avatar
 
Gildas Bazin committed
159
    p_access_data = malloc( sizeof(input_directory_t) );
160 161 162 163
    p_input->p_access_data = (void *)p_access_data;
    if( p_access_data == NULL )
    {
        msg_Err( p_input, "out of memory" );
Gildas Bazin's avatar
 
Gildas Bazin committed
164
        free( psz_name );
165 166
        return VLC_ENOMEM;
    }
167
    p_access_data->i_pos = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
168

169 170
    psz_mode = config_GetPsz( p_input , "recursive" );
    if( !psz_mode )
171
    {
172
        msg_Err( p_input, "Unable to get configuration" );
173 174 175
        return VLC_EGENERIC;
    }

176
    if( !strncmp( psz_mode, "none" , 4 )  )
177
    {
178 179 180 181 182 183 184 185 186 187 188 189 190 191 192
        i_mode = MODE_NONE;
    }
    else if( !strncmp( psz_mode, "collapse", 8 )  )
    {
        i_mode = MODE_COLLAPSE;
    }
    else
    {
        i_mode = MODE_EXPAND;
    }
    if( ReadDir( p_input, psz_name , i_mode ) != VLC_SUCCESS )
    {
        free( p_access_data );
        free( psz_name );
        return VLC_EGENERIC;
193
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
194

195 196 197 198 199 200 201
    msg_Dbg(p_input,"Directory read complete. Read %i bytes",
                    p_access_data->i_pos);

    p_access_data->p_dir_buffer[p_access_data->i_pos] = '\0';
    p_access_data->i_pos++;
    p_access_data->i_buf_length = p_access_data->i_pos;
    p_access_data->i_buf_pos = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
202 203 204 205

    /* Force m3u demuxer */
    p_input->psz_demux = "m3u";

206 207 208 209 210 211 212 213 214
    return VLC_SUCCESS;
}

/*****************************************************************************
 * Close: close the target
 *****************************************************************************/
static void Close( vlc_object_t * p_this )
{
    input_thread_t * p_input = (input_thread_t *)p_this;
Gildas Bazin's avatar
 
Gildas Bazin committed
215 216
    input_directory_t * p_access_data =
        (input_directory_t *)p_input->p_access_data;
217

218
    msg_Info( p_input, "closing `%s/%s://%s'",
219 220 221 222 223 224 225 226 227 228
              p_input->psz_access, p_input->psz_demux, p_input->psz_name );

    free( p_access_data );
}

/*****************************************************************************
 * Read: read directory and output to demux.
 *****************************************************************************/
static ssize_t Read( input_thread_t * p_input, byte_t * p_buffer, size_t i_len )
{
Gildas Bazin's avatar
 
Gildas Bazin committed
229 230 231 232 233
    input_directory_t * p_access_data =
        (input_directory_t *)p_input->p_access_data;
    unsigned int i_remaining = p_access_data->i_buf_length -
                               p_access_data->i_buf_pos;

234 235
    if( i_remaining > 0 )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
236 237 238 239 240 241
        int i_ret;

        i_ret = __MIN( i_len, i_remaining );
        memcpy( p_buffer,
                &p_access_data->p_dir_buffer[p_access_data->i_buf_pos],
                i_ret );
242 243 244 245 246
        p_access_data->i_buf_pos += i_ret;
        return (ssize_t) i_ret;
    }
    return 0;
}
247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295

/* Local functions */

/*****************************************************************************
 * ReadDir: read a directory and add its content to the list
 *****************************************************************************/
int ReadDir( input_thread_t *p_input, char *psz_name , int i_mode )
{
    DIR *                       p_current_dir;
    struct dirent *             p_dir_content;

    input_directory_t * p_access_data =
        (input_directory_t *)p_input->p_access_data;

    /* have to cd into this dir */
    p_current_dir = opendir( psz_name );

    if( p_current_dir == NULL )
    {
        /* something went bad, get out of here ! */
#   ifdef HAVE_ERRNO_H
        msg_Warn( p_input, "cannot open directory `%s' (%s)",
                  psz_name, strerror(errno));
#   else
        msg_Warn( p_input, "cannot open directory `%s'", psz_name );
#   endif
        return VLC_EGENERIC;
    }

    p_dir_content = readdir( p_current_dir );

    /* while we still have entries in the directory */
    while( p_dir_content != NULL && p_access_data->i_pos < MAX_DIR_SIZE )
    {
        int i_size_entry = strlen( psz_name ) +
                           strlen( p_dir_content->d_name ) + 2;
        char *psz_entry = (char *)malloc( sizeof(char)*i_size_entry);

        sprintf( psz_entry, "%s/%s",psz_name,p_dir_content->d_name);

#if 0 /* Disable this message, it makes too much output */
        msg_Dbg( p_input, "Entry %s",psz_entry );
#endif

        /* if it is "." or "..", forget it */
        if( strcmp( p_dir_content->d_name, "." ) &&
            strcmp( p_dir_content->d_name, ".." ) &&
            p_access_data->i_pos + i_size_entry < MAX_DIR_SIZE )
        {
Gildas Bazin's avatar
Gildas Bazin committed
296
#if defined( DT_DIR )
297
            if( p_dir_content->d_type == DT_DIR )
Gildas Bazin's avatar
Gildas Bazin committed
298 299 300 301 302 303 304
#elif defined( S_ISDIR )
            struct stat stat_data;
            stat( psz_entry, &stat_data );
            if( S_ISDIR(stat_data.st_mode) )
#else
            if( 0 )
#endif
305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344
            {
                if( i_mode == MODE_NONE )
                {
                    msg_Dbg( p_input, "Skipping subdirectory %s",psz_entry );
                    p_dir_content = readdir( p_current_dir );
                    continue;
                }
                else if(i_mode == MODE_EXPAND )
                {
                    msg_Dbg(p_input, "Reading subdirectory %s",psz_entry );
                    if( ReadDir( p_input, psz_entry , MODE_EXPAND )
                                 != VLC_SUCCESS )
                    {
                        return VLC_EGENERIC;
                    }
                }
                else
                {
                    sprintf( &p_access_data->p_dir_buffer[p_access_data->i_pos],
                             "%s", psz_entry );
                    p_access_data->i_pos += i_size_entry -1 ;
                    p_access_data->p_dir_buffer[p_access_data->i_pos] = '\n';
                    p_access_data->i_pos++;
                }
            }
            else
            {
                sprintf( &p_access_data->p_dir_buffer[p_access_data->i_pos],
                         "%s", psz_entry );
                p_access_data->i_pos += i_size_entry - 1;
                p_access_data->p_dir_buffer[p_access_data->i_pos] = '\n';
                p_access_data->i_pos++;
            }
        }
        free( psz_entry );
        p_dir_content = readdir( p_current_dir );
    }
    closedir( p_current_dir );
    return VLC_SUCCESS;
}