void generate_files(libtorrent::torrent_info const& ti, std::string const& path
, bool alternate_data)
{
file_pool fp;
storage_params params;
params.files = &ti.files();
params.path = path;
params.pool = &fp;
default_storage st(params);
int const num_pieces = ti.num_pieces();
std::vector<char> buffer;
for (int i = 0; i < num_pieces; ++i)
{
int const piece_size = ti.piece_size(i);
buffer.resize(ti.piece_length());
std::uint8_t const data = std::uint8_t((alternate_data ? 255 - i : i) & 0xff);
for (int o = 0; o < piece_size; ++o)
{
memcpy(&buffer[o], &data, 1);
}
file::iovec_t b = { &buffer[0], size_t(piece_size) };
storage_error ec;
int ret = st.writev(&b, 1, i, 0, 0, ec);
if (ret != piece_size || ec)
{
std::fprintf(stderr, "ERROR writing files: (%d expected %d) %s\n"
, ret, piece_size, ec.ec.message().c_str());
}
}
}
