iohandler.hh

Go to the documentation of this file.

/* -*- mia-c++  -*-
 *
 * This file is part of MIA - a toolbox for medical image analysis 
 * Copyright (c) Leipzig, Madrid 1999-2017 Gert Wollny
 *
 * MIA is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with MIA; if not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef ph_IOhandler_hh
#define ph_IOhandler_hh
#include <set>

#include <mia/core/handler.hh>
#include <mia/core/ioplugin.hh>
#include <mia/core/delayedparameter.hh>

NS_MIA_BEGIN

template <class I> 
class EXPORT_HANDLER TIOPluginHandler: public TPluginHandler<I> {
public:

        typedef typename I::Data Data; 
        
        typedef typename std::shared_ptr<Data > PData; 
        
        typedef typename TPluginHandler<I>::Interface Interface; 
        
        typedef typename TPluginHandler<I>::const_iterator const_iterator; 

        typedef std::multimap<std::string, std::string> CSuffixmap; 
        
        typedef TDelayedParameter<PData> DataKey; 
        
        PData load(const std::string& fname) const; 

        DataKey load_to_pool(const std::string& fname) const; 

        bool save(const std::string& fname, const Data& data) const;

        const Interface *preferred_plugin_ptr(const std::string& fname) const; 

        const Interface& preferred_plugin(const std::string& fname) const; 

        const CSuffixmap& get_supported_filetype_map() const; 

        const std::string get_supported_suffixes() const; 

        const std::set<std::string> get_supported_suffix_set() const; 

        std::string get_preferred_suffix(const std::string& type) const; 

protected: 
        TIOPluginHandler(); 

private:        

        void do_initialise(); 
        // a map of plugins 

        CSuffixmap m_suffixmap; 

        // list of supported compressd file suffixes
        std::set<std::string> m_compress_sfx; 


        // print out info about the available plug-ins 
        void do_print_help(std::ostream& os) const;

        std::string get_handler_type_string_and_help(std::ostream& os) const; 
        std::string do_get_handler_type_string() const; 
        bool do_validate_parameter_string(const std::string& s) const;

        virtual void check_file_exists(const std::string& fname) const; 
        
        class EXPORT_HANDLER CDatapoolPlugin : public Interface {
        public: 
                CDatapoolPlugin(); 
        private: 
                PData do_load(const std::string& fname) const;
                bool do_save(const std::string& fname, 
                             const typename Interface::Data& data) const; 
                const std::string do_get_descr() const;
                const std::string do_get_preferred_suffix() const; 
                        
        }; 
        std::shared_ptr<Interface> m_pool_plugin; 
}; 

#define EXPLICITE_INSTANCEIATE_IO_HANDLER(IOTYPE)                       \
        template class TIOPlugin<IOTYPE>;                               \
        template class THandlerSingleton<TIOPluginHandler<TIOPlugin<IOTYPE>>>;  \
        template class TIOPluginHandler<TIOPlugin<IOTYPE>>;             \
        template class TPluginHandler<TIOPlugin<IOTYPE>>                \



template <typename Data> 
struct IOHandler_of {
        typedef THandlerSingleton<TIOPluginHandler<TIOPlugin<Data>>> type;
}; 

template <typename T>
T load_image(const std::string& MIA_PARAM_UNUSED(filename))
{
        static_assert(sizeof(T) == 0, "The call to load_image must be resolved to a template specialization"); 

}

NS_MIA_END
#endif