LongvolReader.h

#pragma once

#if defined(LongvolReader_RECURSES)
#error Recursive header files inclusion detected in LongvolReader.h
#else // defined(LongvolReader_RECURSES)

#define LongvolReader_RECURSES

#if !defined LongvolReader_h

#define LongvolReader_h

// Inclusions
#include <iostream>
#include <string>
#include <cstdio>
#include "DGtal/base/Common.h"
#include <boost/static_assert.hpp>
#include "DGtal/helpers/StdDefs.h"


namespace DGtal
{

  // template class LongvolReader
  template <typename TImageContainer>
  struct LongvolReader
  {
    // ----------------------- Standard services ------------------------------

    typedef TImageContainer ImageContainer;

    BOOST_STATIC_ASSERT(ImageContainer::Domain::dimension == 3);


    static ImageContainer importLongvol(const std::string & filename) throw(DGtal::IOException);
    
   
    
  private:

    template <typename Word>
    static
    FILE* read_word( FILE* fin, Word& aValue )
    {
      aValue = 0;
      for (unsigned size = 0; size < sizeof( Word ); ++size)
        aValue |= getc(fin) << (8 * size);
      return fin;
    }

    typedef unsigned char voxel;
    // This class help us to associate a field type and his value.
    // An object is a pair (type, value). You can copy and assign
    // such objects.
    /* In recent C++, we should use a std::map, but we prefer (badly) code it
       by hand for compatibility with old compilers.
       At this time, there is a limit of 30 fields in header :-} */
    struct HeaderField {
      HeaderField( const char *t, const char *v ) :
        type( strdup(t) ), value( strdup(v) ) {}
      ~HeaderField() {
        free( type );
        free( value );
      }
      HeaderField( const HeaderField &h ) :
        type( strdup(h.type) ), value( strdup(h.value) ) {};
      HeaderField() : type(NULL), value(NULL) {};
      const HeaderField &operator = (const HeaderField &h) {
        free( type );
        free( value );
        if (h.type != NULL) {
          type = strdup( h.type );
          value = strdup( h.value );
        }
        return *this;
      }
      char *type;
      char *value;
    };


    static const char *getHeaderValue( const char *type, const HeaderField * header );

    static     int getHeaderValueAsInt( const char *type, int *dest , const HeaderField * header);


    static const int MAX_HEADERNUMLINES = 64;
    
    
    static int getHeaderField( const char *type, const HeaderField * header ) ;
    
    static const char *requiredHeaders[];
   
  }; // end of class LongvolReader


} // namespace DGtal


// Includes inline functions.
#include "DGtal/io/readers/LongvolReader.ih"

//                                                                           //

#endif // !defined LongvolReader_h

#undef LongvolReader_RECURSES
#endif // else defined(LongvolReader_RECURSES)