C++ (Cpp) BufferPtr::begin Examples

Example #1

File: block.cpp Project: PatrickGuo/ndn-cxx-master

bool
Block::fromBuffer(const uint8_t* buffer, size_t maxSize, Block& block)
{
  const uint8_t* tempBegin = buffer;
  const uint8_t* tempEnd = buffer + maxSize;

  uint32_t type = 0;
  bool isOk = Tlv::readType(tempBegin, tempEnd, type);
  if (!isOk)
    return false;

  uint64_t length;
  isOk = Tlv::readVarNumber(tempBegin, tempEnd, length);
  if (!isOk)
    return false;

  if (length > static_cast<uint64_t>(tempEnd - tempBegin))
    {
      return false;
    }

  BufferPtr sharedBuffer = make_shared<Buffer>(buffer, tempBegin + length);
  block = Block(sharedBuffer, type,
                sharedBuffer->begin(), sharedBuffer->end(),
                sharedBuffer->begin() + (tempBegin - buffer), sharedBuffer->end());

  return true;
}

Example #2

File: TcpConnection.cpp Project: cchd0001/gld_work

void TcpConnection::RealSend(const BufferPtr& buffer)
{
    send_buf_.push_back(buffer);

    socket_.Send(std::bind(&TcpConnection::OnWrite, shared_from_this(),
        std::placeholders::_1, std::placeholders::_2), &(*buffer->begin()), buffer->size());
}

Example #3

File: block.cpp Project: AaronTien/ndn-cxx

std::tuple<bool, Block>
Block::fromBuffer(const uint8_t* buffer, size_t maxSize)
{
  const uint8_t* tempBegin = buffer;
  const uint8_t* tempEnd = buffer + maxSize;

  uint32_t type = 0;
  bool isOk = tlv::readType(tempBegin, tempEnd, type);
  if (!isOk)
    return std::make_tuple(false, Block());

  uint64_t length;
  isOk = tlv::readVarNumber(tempBegin, tempEnd, length);
  if (!isOk)
    return std::make_tuple(false, Block());

  if (length > static_cast<uint64_t>(tempEnd - tempBegin))
    return std::make_tuple(false, Block());

  BufferPtr sharedBuffer = make_shared<Buffer>(buffer, tempBegin + length);
  return std::make_tuple(true,
         Block(sharedBuffer, type,
               sharedBuffer->begin(), sharedBuffer->end(),
               sharedBuffer->begin() + (tempBegin - buffer), sharedBuffer->end()));
}