Function ftp_read_dir

libavformat/ftp.c:1055–1100

}

static int ftp_read_dir(URLContext *h, AVIODirEntry **next)
{
    FTPContext *s = h->priv_data;
    char *start, *found;
    int ret, retried;

    do {
        retried = 0;
        start = s->dir_buffer + s->dir_buffer_offset;
        while (!(found = strstr(start, "\n"))) {
            if (retried)
                return AVERROR(EIO);
            s->dir_buffer_size -= s->dir_buffer_offset;
            s->dir_buffer_offset = 0;
            if (s->dir_buffer_size)
                memmove(s->dir_buffer, start, s->dir_buffer_size);
            ret = ffurl_read(s->conn_data, s->dir_buffer + s->dir_buffer_size, DIR_BUFFER_SIZE - (s->dir_buffer_size + 1));
            if (ret < 0)
                return ret;
            if (!ret) {
                *next = NULL;
                return 0;
            }
            s->dir_buffer_size += ret;
            s->dir_buffer[s->dir_buffer_size] = 0;
            start = s->dir_buffer;
            retried = 1;
        }
        s->dir_buffer_offset += (found + 1 - start);
        found[0] = 0;
        if (found > start && found[-1] == '\r')
            found[-1] = 0;

        *next = ff_alloc_dir_entry();
        if (!*next)
            return AVERROR(ENOMEM);
        (*next)->utf8 = s->utf8;
        ret = ftp_parse_entry(h, start, *next);
        if (ret) {
            avio_free_directory_entry(next);
            if (ret < 0)
                return ret;
        }
    } while (ret > 0);
    return 0;
}

static int ftp_close_dir(URLContext *h)
{