cpf_item.cpp

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#include <boost/make_shared.hpp>

#include "odva_ethernetip/cpf_item.h"
#include "odva_ethernetip/serialization/serializable_buffer.h"
#include "odva_ethernetip/serialization/copy_serializable.h"

using boost::make_shared;

namespace eip {

using serialization::SerializableBuffer;

Writer& CPFItem::serialize(Writer& writer) const
{
  writer.write(item_type_);
  writer.write(getDataLength());
  if (item_data_) {
    item_data_->serialize(writer);
  }
  return writer;
}

Reader& CPFItem::deserialize(Reader& reader, size_t length)
{
  if (length < 4)
  {
    throw std::length_error("Length given too small to parse CPF Item type and length");
  }
  EIP_UINT item_length;
  reader.read(item_type_);
  reader.read(item_length);
  if (length < item_length + 4)
  {
    throw std::length_error("Length given too small to parse CPF Item Data");
  }
  deserializeData(reader, item_length);
  return reader;
}

Reader& CPFItem::deserialize(Reader& reader)
{
  EIP_UINT item_length;
  reader.read(item_type_);
  reader.read(item_length);
  deserializeData(reader, item_length);
  return reader;
}

void CPFItem::deserializeData(Reader& reader, EIP_UINT item_length)
{
  if (item_length > 0)
  {
    item_data_ = make_shared<SerializableBuffer>();
    item_data_->deserialize(reader, item_length);
  }
  else
  {
    item_data_ = shared_ptr<Serializable>();
  }
}

void CPFItem::getDataAs(Serializable& result)
{
  serialization::copy_serializable(result, *item_data_);
}

} // namespace eip