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  Program: GDCM (Grassroots DICOM). A DICOM library
  Module:  $URL$

  Copyright (c) 2006-2010 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 "gdcmString.h"

namespace gdcm

 * \brief CodeString
 * This is an implementation of DICOM VR: CS
 * The cstor will properly Trim so that operator== is correct.
 * \note the cstor of CodeString will Trim the string on the fly so as
 * to remove the extra leading and ending spaces. However it will not
 * perform validation on the fly (CodeString obj can contains invalid
 * char such as lower cases). This design was chosen to be a little tolerant
 * to broken DICOM implementation, and thus allow user to compare lower
 * case CS from there input file without the need to first rewrite them
 * to get rid of invalid character (validation is a different operation from
 * searching, querying).
 * \warning when writing out DICOM file it is highly recommended to perform
 * the IsValid() call, at least to check that the length of the string match
 * the definition in the standard.
// Note to myself: because note all wrapped language support exception
// we could not support throwing an exception during object construction.
00042 class GDCM_EXPORT CodeString
  friend std::ostream& operator<< (std::ostream& os, const CodeString& str);
  friend bool operator==(const CodeString &ref, const CodeString& cs);
  friend bool operator!=(const CodeString &ref, const CodeString& cs);
  typedef String<'\\',16> InternalClass;
  typedef InternalClass::value_type             value_type;
  typedef InternalClass::pointer                pointer;
  typedef InternalClass::reference              reference;
  typedef InternalClass::const_reference        const_reference;
  typedef InternalClass::size_type              size_type;
  typedef InternalClass::difference_type        difference_type;
  typedef InternalClass::iterator               iterator;
  typedef InternalClass::const_iterator         const_iterator;
  typedef InternalClass::reverse_iterator       reverse_iterator;
  typedef InternalClass::const_reverse_iterator const_reverse_iterator;

  /// CodeString constructors.
00061   CodeString(): Internal() {}
  CodeString(const value_type* s): Internal(s) { Internal = Internal.Trim(); }
  CodeString(const value_type* s, size_type n): Internal(s, n) {
    Internal = Internal.Trim(); }
  CodeString(const InternalClass& s, size_type pos=0, size_type n=InternalClass::npos):
    Internal(s, pos, n) { Internal = Internal.Trim(); }

  /// Check if CodeString obj is correct..
  bool IsValid() const;

  /// Return the full code string as std::string
00072   std::string GetAsString() const {
    return Internal;

  /// \deprecated Remove extra leading and ending spaces.
  GDCM_LEGACY(std::string Trim() const)

  /// Return the size of the string
00080   size_type Size() const { return Internal.size(); }

  /// \deprecated
  /// Return the size of the string
  GDCM_LEGACY(size_type size() const)

00087   std::string TrimInternal() const {
    return Internal.Trim();

  String<'\\',16> Internal;

inline std::ostream& operator<< (std::ostream& os, const CodeString& str)
  os << str.Internal;
  return os;

inline bool operator==(const CodeString &ref, const CodeString& cs)
  return ref.Internal == cs.Internal;
inline bool operator!=(const CodeString &ref, const CodeString& cs)
  return ref.Internal != cs.Internal;

} // end namespace gdcm


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