gdcmPreamble.h

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00001 /*=========================================================================
00002 
00003   Program: GDCM (Grassroots DICOM). A DICOM library
00004   Module:  $URL$
00005 
00006   Copyright (c) 2006-2010 Mathieu Malaterre
00007   All rights reserved.
00008   See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00015 
00016 #ifndef GDCMPREAMBLE_H
00017 #define GDCMPREAMBLE_H
00018 
00019 #include "gdcmTypes.h"
00020 #include "gdcmVL.h"
00021 
00022 namespace gdcm
00023 {
00024 
00028 class GDCM_EXPORT Preamble
00029 {
00030 public:
00031   Preamble();
00032   ~Preamble();
00033 
00034   friend std::ostream &operator<<(std::ostream &_os, const Preamble &_val);
00035 
00036   // Clear
00037   void Clear();
00038 
00039   // Set Preamble to the default one
00040   void Valid();
00041   void Create();
00042   void Remove();
00043 
00044  // Read
00045   std::istream &Read(std::istream &is);
00046 
00047   // Write
00048   std::ostream const &Write(std::ostream &os) const;
00049 
00050   void Print(std::ostream &os) const;
00051 
00052   const char *GetInternal() const { return Internal; }
00053 
00054   bool IsEmpty() const { return !Internal; }
00055 
00056   VL GetLength() const { return 128 + 4; }
00057 
00058   Preamble(Preamble const &)
00059     {
00060     Create();
00061     }
00062   Preamble& operator=(Preamble const &)
00063     {
00064     Create();
00065     return *this;
00066     }
00067 protected:
00068   //
00069   bool IsValid() const { 
00070     // is (IsValid == true) => Internal was read
00071     return true; 
00072   }
00073 
00074  
00075 private:
00076   char *Internal; 
00077 };
00078 //-----------------------------------------------------------------------------
00079 inline std::ostream& operator<<(std::ostream &os, const Preamble &val)
00080 {
00081   os << val.Internal;
00082   return os;
00083 }
00084 
00085 
00086 } // end namespace gdcm
00087 
00088 #endif //GDCMPREAMBLE_H
00089 

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