anytype_reader_details.h

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/* This software and supporting documentation are distributed by
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 * This software is governed by the CeCILL-B license under
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 * and INRIA at the following URL "http://www.cecill.info".
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#ifndef AIMS_ANYTYPE_READER_DETAILS_H
#define AIMS_ANYTYPE_READER_DETAILS_H

 
// includes from STL
#include <limits>
 
// includes from AIMS
#include "aims/io/finder.h"
#include "aims/utility/converter_volume.h"
 
namespace aims
{
 
  namespace
  {
    // TODO: should add traits to the whole scheme to call the convertor. Also to get some error
    // checking from converter -- right now, it always returns true.
    template < typename TCaller, typename TFile >
    bool anytype_reader(Process & p, const std::string & filein, Finder & f)
    {
      typedef typename TCaller::return_type                                               return_type;
      typedef typename TCaller::convertor_type::template Type<TFile, return_type>::type   convertor_type;
 
      // restore true caller type
      TCaller & atr = dynamic_cast<TCaller &>(p);
 
      // read data with original type
      TFile data;
      Reader<TFile> r(filein);
      std::string format = f.format();
      r.read(data, 0, &format);
 
      // converting to desired type
      convertor_type convert;
      convert.convert(data, atr.get());
 
      return true;
    }
  }
 
  //-----------------------------------------------------------------------------------
 
  
  template < typename T, typename TConvertorFamily >
  AnyTypeReaderProcess<T, TConvertorFamily>::AnyTypeReaderProcess(const T & init)
    : m_res(init)
  {
    this->registerProcesses();
  }
 
 
  template < typename T, typename TConvertorFamily >
  void AnyTypeReaderProcess<T, TConvertorFamily>::registerProcesses()
  {
    typedef AnyTypeReaderProcess<T, TConvertorFamily> Self;
 
    // TODO: other file types can be added for other needs
    registerProcessType("Volume", "S8",     &anytype_reader<Self, AimsData< int8_t   > >);
    registerProcessType("Volume", "U8",     &anytype_reader<Self, AimsData< uint8_t  > >);
    registerProcessType("Volume", "S16",    &anytype_reader<Self, AimsData< int16_t  > >);
    registerProcessType("Volume", "U16",    &anytype_reader<Self, AimsData< uint16_t > >);
    registerProcessType("Volume", "S32",    &anytype_reader<Self, AimsData< int32_t  > >);
    registerProcessType("Volume", "U32",    &anytype_reader<Self, AimsData< uint32_t > >);
    registerProcessType("Volume", "FLOAT",  &anytype_reader<Self, AimsData< float    > >);
    registerProcessType("Volume", "DOUBLE", &anytype_reader<Self, AimsData< double   > >);
  }
 
 
  //-----------------------------------------------------------------------------------
 
  template < typename T, typename TConvertorFamily >
  AnyTypeReader<T, TConvertorFamily>::AnyTypeReader(std::string filename)
    : Base((T()))
    , m_filename(filename)
  {}
 
 
  template < typename T, typename TConvertorFamily >
  void AnyTypeReader<T, TConvertorFamily>::read(T & out)
  {
    this->execute(m_filename);
    out = this->get();
  }
 
 
 
} // namespace aims
 
#endif