Ejemplo n.º 1
0
std::size_t write_at(SyncRandomAccessWriteDevice& d,
    lslboost::uint64_t offset, lslboost::asio::basic_streambuf<Allocator>& b,
    CompletionCondition completion_condition, lslboost::system::error_code& ec)
{
  std::size_t bytes_transferred = write_at(
      d, offset, b.data(), completion_condition, ec);
  b.consume(bytes_transferred);
  return bytes_transferred;
}
Ejemplo n.º 2
0
std::size_t read_until(SyncReadStream& s,
    lslboost::asio::basic_streambuf<Allocator>& b, const lslboost::regex& expr,
    lslboost::system::error_code& ec)
{
  std::size_t search_position = 0;
  for (;;)
  {
    // Determine the range of the data to be searched.
    typedef typename lslboost::asio::basic_streambuf<
      Allocator>::const_buffers_type const_buffers_type;
    typedef lslboost::asio::buffers_iterator<const_buffers_type> iterator;
    const_buffers_type buffers = b.data();
    iterator begin = iterator::begin(buffers);
    iterator start_pos = begin + search_position;
    iterator end = iterator::end(buffers);

    // Look for a match.
    lslboost::match_results<iterator,
      typename std::vector<lslboost::sub_match<iterator> >::allocator_type>
        match_results;
    if (regex_search(start_pos, end, match_results, expr,
          lslboost::match_default | lslboost::match_partial))
    {
      if (match_results[0].matched)
      {
        // Full match. We're done.
        ec = lslboost::system::error_code();
        return match_results[0].second - begin;
      }
      else
      {
        // Partial match. Next search needs to start from beginning of match.
        search_position = match_results[0].first - begin;
      }
    }
    else
    {
      // No match. Next search can start with the new data.
      search_position = end - begin;
    }

    // Check if buffer is full.
    if (b.size() == b.max_size())
    {
      ec = error::not_found;
      return 0;
    }

    // Need more data.
    std::size_t bytes_to_read = read_size_helper(b, 65536);
    b.commit(s.read_some(b.prepare(bytes_to_read), ec));
    if (ec)
      return 0;
  }
}
Ejemplo n.º 3
0
std::size_t read_until(SyncReadStream& s,
    lslboost::asio::basic_streambuf<Allocator>& b, const std::string& delim,
    lslboost::system::error_code& ec)
{
  std::size_t search_position = 0;
  for (;;)
  {
    // Determine the range of the data to be searched.
    typedef typename lslboost::asio::basic_streambuf<
      Allocator>::const_buffers_type const_buffers_type;
    typedef lslboost::asio::buffers_iterator<const_buffers_type> iterator;
    const_buffers_type buffers = b.data();
    iterator begin = iterator::begin(buffers);
    iterator start_pos = begin + search_position;
    iterator end = iterator::end(buffers);

    // Look for a match.
    std::pair<iterator, bool> result = detail::partial_search(
        start_pos, end, delim.begin(), delim.end());
    if (result.first != end)
    {
      if (result.second)
      {
        // Full match. We're done.
        ec = lslboost::system::error_code();
        return result.first - begin + delim.length();
      }
      else
      {
        // Partial match. Next search needs to start from beginning of match.
        search_position = result.first - begin;
      }
    }
    else
    {
      // No match. Next search can start with the new data.
      search_position = end - begin;
    }

    // Check if buffer is full.
    if (b.size() == b.max_size())
    {
      ec = error::not_found;
      return 0;
    }

    // Need more data.
    std::size_t bytes_to_read = read_size_helper(b, 65536);
    b.commit(s.read_some(b.prepare(bytes_to_read), ec));
    if (ec)
      return 0;
  }
}
Ejemplo n.º 4
0
std::size_t read_until(SyncReadStream& s,
    lslboost::asio::basic_streambuf<Allocator>& b, char delim,
    lslboost::system::error_code& ec)
{
  std::size_t search_position = 0;
  for (;;)
  {
    // Determine the range of the data to be searched.
    typedef typename lslboost::asio::basic_streambuf<
      Allocator>::const_buffers_type const_buffers_type;
    typedef lslboost::asio::buffers_iterator<const_buffers_type> iterator;
    const_buffers_type buffers = b.data();
    iterator begin = iterator::begin(buffers);
    iterator start_pos = begin + search_position;
    iterator end = iterator::end(buffers);

    // Look for a match.
    iterator iter = std::find(start_pos, end, delim);
    if (iter != end)
    {
      // Found a match. We're done.
      ec = lslboost::system::error_code();
      return iter - begin + 1;
    }
    else
    {
      // No match. Next search can start with the new data.
      search_position = end - begin;
    }

    // Check if buffer is full.
    if (b.size() == b.max_size())
    {
      ec = error::not_found;
      return 0;
    }

    // Need more data.
    std::size_t bytes_to_read = read_size_helper(b, 65536);
    b.commit(s.read_some(b.prepare(bytes_to_read), ec));
    if (ec)
      return 0;
  }
}