gdcmPreamble.h

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/*=========================================================================
 
  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.
 
=========================================================================*/
#ifndef GDCMPREAMBLE_H
#define GDCMPREAMBLE_H
 
#include "gdcmTypes.h"
#include "gdcmVL.h"
 
namespace gdcm
{
 
class GDCM_EXPORT Preamble
{
public:
  Preamble();
  ~Preamble();
 
  friend std::ostream &operator<<(std::ostream &_os, const Preamble &_val);
 
  void Clear();
 
  void Valid();
  void Create();
  void Remove();
 
  std::istream &Read(std::istream &is);
 
  std::ostream const &Write(std::ostream &os) const;
 
  void Print(std::ostream &os) const;
 
  const char *GetInternal() const { return Internal; }
 
  bool IsEmpty() const { return !Internal; }
 
  VL GetLength() const { return 128 + 4; }
 
  Preamble(Preamble const &):Internal(nullptr)
    {
    Create();
    }
  Preamble& operator=(Preamble const &)
    {
    Create();
    return *this;
    }
protected:
  //
  bool IsValid() const {
    // is (IsValid == true) => Internal was read
    return true;
  }
 
private:
  char *Internal;
};
//-----------------------------------------------------------------------------
inline std::ostream& operator<<(std::ostream &os, const Preamble &val)
{
  os << val.Internal;
  return os;
}
 
} // end namespace gdcm
 
#endif //GDCMPREAMBLE_H