encap_packet.cpp

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#include <vector>
#include <boost/make_shared.hpp>

#include "odva_ethernetip/encap_packet.h"
#include "odva_ethernetip/serialization/serializable_buffer.h"
#include "odva_ethernetip/serialization/buffer_reader.h"
#include "odva_ethernetip/serialization/buffer_writer.h"
#include "odva_ethernetip/serialization/copy_serializable.h"

using std::vector;
using boost::make_shared;

namespace eip {

using serialization::SerializableBuffer;
using serialization::BufferReader;
using serialization::BufferWriter;

void EncapPacket::getPayloadAs(Serializable& result)
{
  serialization::copy_serializable(result, *payload_);
}

Writer& EncapPacket::serialize(Writer& writer) const
{
  // fixme: need to set length before this!
  // header_.length = (NULL == payload_) ? 0 : payload_->getLength();
  header_.serialize(writer);
  if (payload_)
  {
    payload_->serialize(writer);
  }
  return writer;
}

Reader& EncapPacket::deserialize(Reader& reader)
{
  header_.deserialize(reader);
  if (header_.length > 0)
  {
    shared_ptr<SerializableBuffer> sb = make_shared<SerializableBuffer>();
    sb->deserialize(reader, header_.length);
    payload_ = sb;
  }
  else
  {
    payload_ = shared_ptr<Serializable>();
  }
  return reader;
}

Reader& EncapPacket::deserialize(Reader& reader, size_t length)
{
  if (length < header_.getLength())
  {
    throw std::length_error("Deserialization size less than header size");
  }
  header_.deserialize(reader);
  if (length != header_.getLength() + header_.length)
  {
    throw std::length_error("Packet length different than given to deserialize");
  }
  if (header_.length > 0)
  {
    payload_ = make_shared<SerializableBuffer>();
    payload_->deserialize(reader, header_.length);
  }
  else
  {
    payload_ = shared_ptr<Serializable>();
  }
  return reader;
}

} // namespace eip