directory.c

vlc源码

            *pb_bool = false;    /* FIXME */
            break;

        /* */
        case ACCESS_GET_MTU:
            pi_int = (int*)va_arg( args, int * );
            *pi_int = 0;
            break;

        case ACCESS_GET_PTS_DELAY:
            pi_64 = (int64_t*)va_arg( args, int64_t * );
            *pi_64 = DEFAULT_PTS_DELAY * 1000;
            break;

        /* */
        case ACCESS_SET_PAUSE_STATE:
        case ACCESS_GET_TITLE_INFO:
        case ACCESS_SET_TITLE:
        case ACCESS_SET_SEEKPOINT:
        case ACCESS_SET_PRIVATE_ID_STATE:
        case ACCESS_GET_CONTENT_TYPE:
        case ACCESS_GET_META:
            return VLC_EGENERIC;

        default:
            msg_Warn( p_access, "unimplemented query in control" );
            return VLC_EGENERIC;
    }
    return VLC_SUCCESS;
}

/*****************************************************************************
 * DemuxOpen:
 *****************************************************************************/
static int DemuxOpen ( vlc_object_t *p_this )
{
    demux_t *p_demux = (demux_t*)p_this;

    if( strcmp( p_demux->psz_demux, "directory" ) )
        return VLC_EGENERIC;

    p_demux->pf_demux   = Demux;
    p_demux->pf_control = DemuxControl;
    return VLC_SUCCESS;
}

/*****************************************************************************
 * Demux: EOF
 *****************************************************************************/
static int Demux( demux_t *p_demux )
{
    (void)p_demux;
    return 0;
}

/*****************************************************************************
 * DemuxControl:
 *****************************************************************************/
static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
{
    return demux_vaControlHelper( p_demux->s, 0, 0, 0, 1, i_query, args );
}


static int Sort (const char **a, const char **b)
{
    return strcoll (*a, *b);
}

struct stat_list_t
{
    stat_list_t *parent;
    struct stat st;
};


/*****************************************************************************
 * ReadDir: read a directory and add its content to the list
 *****************************************************************************/
static int ReadDir( access_t *p_access, playlist_t *p_playlist,
                    const char *psz_name,
                    int i_mode,
                    playlist_item_t *p_parent_category,
                    input_item_t *p_current_input,
                    DIR *handle, stat_list_t *stparent )
{
    char **pp_dir_content = NULL;
    int             i_dir_content, i, i_return = VLC_SUCCESS;
    playlist_item_t *p_node;

    if( !vlc_object_alive( p_access ) )
        return VLC_EGENERIC;

    if( !vlc_object_alive( p_playlist ) )
        return VLC_EGENERIC;

    char **ppsz_extensions = NULL;
    int i_extensions = 0;
    char *psz_ignore;

    struct stat_list_t stself;
#ifndef WIN32
    int fd = dirfd (handle);

    if ((fd == -1) || fstat (fd, &stself.st))
    {
        msg_Err (p_playlist, "cannot stat `%s': %m", psz_name);
        return VLC_EGENERIC;
    }

    for (stat_list_t *stats = stparent; stats != NULL; stats = stats->parent)
    {
        if ((stself.st.st_ino == stats->st.st_ino)
         && (stself.st.st_dev == stats->st.st_dev))
        {
            msg_Warn (p_playlist,
                      "ignoring infinitely recursive directory `%s'",
                      psz_name);
            return VLC_SUCCESS;
        }
    }
#else
        /* Windows has st_dev (driver letter - 'A'), but it zeroes st_ino,
         * so that the test above will always incorrectly succeed.
         * Besides, Windows does not have dirfd(). */
#endif

    stself.parent = stparent;

    /* Get the first directory entry */
    i_dir_content = utf8_loaddir (handle, &pp_dir_content, NULL, Sort);
    if( i_dir_content == -1 )
    {
        msg_Err (p_playlist, "cannot read `%s': %m", psz_name);
        return VLC_EGENERIC;
    }
    else if( i_dir_content <= 0 )
    {
        /* directory is empty */
        msg_Dbg( p_playlist, "%s directory is empty", psz_name );
        free( pp_dir_content );
        return VLC_SUCCESS;
    }

    /* Build array with ignores */
    psz_ignore = var_CreateGetString( p_playlist, "ignore-filetypes" );
    if( psz_ignore && *psz_ignore )
    {
        char *psz_parser = psz_ignore;
        int a;

        for( a = 0; psz_parser[a] != '\0'; a++ )
        {
            if( psz_parser[a] == ',' ) i_extensions++;
        }

        ppsz_extensions = (char **)calloc (i_extensions, sizeof (char *));

        for( a = 0; a < i_extensions; a++ )
        {
            char *tmp, *ptr;

            while( psz_parser[0] != '\0' && psz_parser[0] == ' ' ) psz_parser++;
            ptr = strchr( psz_parser, ',');
            tmp = ( ptr == NULL )
                 ? strdup( psz_parser )
                 : strndup( psz_parser, ptr - psz_parser );

            ppsz_extensions[a] = tmp;
            psz_parser = ptr + 1;
        }
    }
    free( psz_ignore );

    /* While we still have entries in the directory */
    for( i = 0; i < i_dir_content; i++ )
    {
        const char *entry = pp_dir_content[i];
        int i_size_entry = strlen( psz_name ) +
                           strlen( entry ) + 2 + 7 /* strlen("file://") */;
        char psz_uri[i_size_entry];

        sprintf( psz_uri, "%s/%s", psz_name, entry);

        /* if it starts with '.' then forget it */
        if (entry[0] != '.')
        {
            DIR *subdir = (i_mode != MODE_COLLAPSE)
                    ? OpenDir (VLC_OBJECT (p_playlist), psz_uri) : NULL;

            if (subdir != NULL) /* Recurse into subdirectory */
            {
                if( i_mode == MODE_NONE )
                {
                    msg_Dbg( p_playlist, "skipping subdirectory `%s'",
                             psz_uri );
                    closedir (subdir);
                    continue;
                }

                msg_Dbg (p_playlist, "creating subdirectory %s", psz_uri);

                PL_LOCK;
                p_node = playlist_NodeCreate( p_playlist, entry,
                                              p_parent_category,
                                              PLAYLIST_NO_REBUILD, NULL );
                PL_UNLOCK;
                assert( p_node );
                /* If we had the parent in category, the it is now node.
                 * Else, we still don't have  */
                i_return = ReadDir( p_access, p_playlist, psz_uri , MODE_EXPAND,
                                    p_parent_category ? p_node : NULL,
                                    p_current_input, subdir, &stself );
                closedir (subdir);
                if (i_return)
                    break; // error :-(
            }
            else
            {
                input_item_t *p_input;

                if( i_extensions > 0 )
                {
                    const char *psz_dot = strrchr (entry, '.' );
                    if( psz_dot++ && *psz_dot )
                    {
                        int a;
                        for( a = 0; a < i_extensions; a++ )
                        {
                            if( !strcmp( psz_dot, ppsz_extensions[a] ) )
                                break;
                        }
                        if( a < i_extensions )
                        {
                            msg_Dbg( p_playlist, "ignoring file %s", psz_uri );
                            continue;
                        }
                    }
                }

                memmove (psz_uri + 7, psz_uri, sizeof (psz_uri) - 7);
                memcpy (psz_uri, "file://", 7);
                p_input = input_item_NewWithType( VLC_OBJECT( p_playlist ),
                                                 psz_uri, entry, 0, NULL,
                                                 -1, ITEM_TYPE_FILE );
                if (p_input != NULL)
                {
                    if( p_current_input )
                        input_item_CopyOptions( p_current_input, p_input );
                    assert( p_parent_category );
                    int i_ret = playlist_BothAddInput( p_playlist, p_input,
                                           p_parent_category,
                                           PLAYLIST_APPEND|PLAYLIST_PREPARSE|
                                           PLAYLIST_NO_REBUILD,
                                           PLAYLIST_END, NULL, NULL,
                                           pl_Unlocked );
                    vlc_gc_decref( p_input );
                    if( i_ret != VLC_SUCCESS )
                        return VLC_EGENERIC;
                }
            }
        }
    }

    for( i = 0; i < i_extensions; i++ )
        free( ppsz_extensions[i] );
    free( ppsz_extensions );

    for( i = 0; i < i_dir_content; i++ )
        free( pp_dir_content[i] );
    free( pp_dir_content );

    return i_return;
}


static DIR *OpenDir (vlc_object_t *obj, const char *path)
{
    DIR *handle = utf8_opendir (path);
    if (handle == NULL)
    {
        int err = errno;
        if (err != ENOTDIR)
            msg_Err (obj, "%s: %m", path);
        // else not a dir
        errno = err;

        return NULL;
    }
    msg_Dbg (obj, "opening directory `%s'", path);
    return handle;
}