filereader.h

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// -*- C++ -*-
//
// This file is part of libgvectors.
// libgvectors is a C++ library intended for visualizing mathematical vectors.
// Copyright (C) 2007  Rafael Ostertag
//
// This program 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 2
// 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 this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
// USA.
//
// $Id: filereader_8h-source.html,v 1.1 2007-09-08 19:02:31 rafi Exp $
//
// File:   filereader.h
// Author: Rafael Ostertag
//
// Created on August 18, 2007, 12:37 AM
//

#ifndef _FILEREADER_H
#define _FILEREADER_H

#include <map>

#include <gvectortypes.h>
#include <vectorstore.h>
#include <visualvector.h>

namespace GVectors {
    template<class Fct> class FileReader {
    private:
        std::map<vslevel_t, gvid_t> levelmap;
        VectorStore& vectorstore;
        Fct callback;
    protected:
        virtual void put(vslevel_t level, const vv_ref_t visualvector) {
            if (level==TOP_LEVEL_NUM) {
                levelmap[level] = vectorstore.add(visualvector);
            } else {
                levelmap[level] = vectorstore.add_child(levelmap[level-1], visualvector);
            }
            
            callback(level, levelmap[level], vectorstore[levelmap[level]]);
        }
        
    public:
        FileReader(VectorStore& vs, Fct cb) : vectorstore(vs), callback(cb) {
            // Empty
        }
        FileReader(const FileReader& fr) : vectorstore(fr.vectorstore),
                callback(fr.callback) {
            // Empty
        }
        virtual ~FileReader() {
            // Empty
        }
        virtual void read() = 0;
    };
}


#endif  /* _FILEREADER_H */

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