Function write_content_without_length

dependencies/httplib/httplib.h:3537–3563

template <typename T>
inline bool
write_content_without_length(Stream &strm,
                             const ContentProvider &content_provider,
                             const T &is_shutting_down) {
  size_t offset = 0;
  auto data_available = true;
  auto ok = true;
  DataSink data_sink;

  data_sink.write = [&](const char *d, size_t l) -> bool {
    if (ok) {
      offset += l;
      if (!write_data(strm, d, l)) { ok = false; }
    }
    return ok;
  };

  data_sink.done = [&](void) { data_available = false; };

  data_sink.is_writable = [&](void) { return ok && strm.is_writable(); };

  while (data_available && !is_shutting_down()) {
    if (!content_provider(offset, 0, data_sink)) { return false; }
    if (!ok) { return false; }
  }
  return true;
}

template <typename T, typename U>
inline bool