/*=========================================================================

  Program: GDCM (Grassroots DICOM). A DICOM library

  Copyright (c) 2006-2011 Mathieu Malaterre
  All rights reserved.
  See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#include "gdcmImplementationClassUIDSub.h"
#include "gdcmFileMetaInformation.h"
#include "gdcmSwapper.h"

namespace gdcm
{
namespace network
{
const uint8_t ImplementationClassUIDSub::ItemType = 0x52;
const uint8_t ImplementationClassUIDSub::Reserved2 = 0x00;

ImplementationClassUIDSub::ImplementationClassUIDSub()
{
  ImplementationClassUID = FileMetaInformation::GetImplementationClassUID();

  ItemLength = (uint16_t)ImplementationClassUID.size();
  assert( (size_t)ItemLength + 4 == Size() );
}

std::istream &ImplementationClassUIDSub::Read(std::istream &is)
{
  //uint8_t itemtype = 0x0;
  //is.read( (char*)&itemtype, sizeof(ItemType) );
  //assert( itemtype == ItemType );
  uint8_t reserved2;
  is.read( (char*)&reserved2, sizeof(Reserved2) );
  uint16_t itemlength;
  is.read( (char*)&itemlength, sizeof(ItemLength) );
  SwapperDoOp::SwapArray(&itemlength,1);
  ItemLength = itemlength;

  char name[256];
  assert( itemlength < 256 );
  is.read( name, itemlength );
  ImplementationClassUID = std::string(name, itemlength);

  assert( (size_t)ItemLength + 4 == Size() );
  return is;
}

const std::ostream &ImplementationClassUIDSub::Write(std::ostream &os) const
{
  os.write( (const char*)&ItemType, sizeof(ItemType) );
  os.write( (const char*)&Reserved2, sizeof(Reserved2) );
  //os.write( (const char*)&ItemLength, sizeof(ItemLength) );
  uint16_t copy = ItemLength;
  SwapperDoOp::SwapArray(&copy,1);
  os.write( (const char*)&copy, sizeof(ItemLength) );

  os.write( ImplementationClassUID.c_str(), ImplementationClassUID.size() );

  return os;
}

size_t ImplementationClassUIDSub::Size() const
{
  size_t ret = 0;
  assert( ImplementationClassUID.size() == ItemLength );
  ret += sizeof(ItemType);
  ret += sizeof(Reserved2);
  ret += sizeof(ItemLength);
  ret += ItemLength;
  return ret;
}

void ImplementationClassUIDSub::Print(std::ostream &os) const
{
  os << "ImplementationClassUID: " << ImplementationClassUID << std::endl;
}

} // end namespace network
} // end namespace gdcm
