C++ (Cpp) ConstBufferPtr::begin示例

示例#1

文件： block.cpp 项目： PatrickGuo/ndn-cxx-master

bool
Block::fromBuffer(const ConstBufferPtr& wire, size_t offset, Block& block)
{
  Buffer::const_iterator tempBegin = wire->begin() + offset;

  uint32_t type;
  bool isOk = Tlv::readType(tempBegin, wire->end(), type);
  if (!isOk)
    return false;

  uint64_t length;
  isOk = Tlv::readVarNumber(tempBegin, wire->end(), length);
  if (!isOk)
    return false;

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

  block = Block(wire, type,
                wire->begin() + offset, tempBegin + length,
                tempBegin, tempBegin + length);

  return true;
}

示例#2

文件： block.cpp 项目： AaronTien/ndn-cxx

std::tuple<bool, Block>
Block::fromBuffer(ConstBufferPtr buffer, size_t offset)
{
  Buffer::const_iterator tempBegin = buffer->begin() + offset;

  uint32_t type;
  bool isOk = tlv::readType(tempBegin, buffer->end(), type);
  if (!isOk)
    return std::make_tuple(false, Block());

  uint64_t length;
  isOk = tlv::readVarNumber(tempBegin, buffer->end(), length);
  if (!isOk)
    return std::make_tuple(false, Block());

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

  return std::make_tuple(true, Block(buffer, type,
                                     buffer->begin() + offset, tempBegin + length,
                                     tempBegin, tempBegin + length));
}