NodeLoader.h

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//=============================================================================
//  Computational Process Networks class library
//  Copyright (C) 1997-2006  Gregory E. Allen and The University of Texas
//
//  This library is free software; you can redistribute it and/or modify it
//  under the terms of the GNU Library General Public License as published
//  by the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This library 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
//  Library General Public License for more details.
//
//  The GNU Public License is available in the file LICENSE, or you
//  can write to the Free Software Foundation, Inc., 59 Temple Place -
//  Suite 330, Boston, MA 02111-1307, USA, or you can find it on the
//  World Wide Web at http://www.fsf.org.
//=============================================================================
#ifndef NODELOADER_H
#define NODELOADER_H
#pragma once
#include <cpn/common.h>
#include <string>
#include <map>
#include <vector>

#define CPN_DEFAULT_INIT_SYMBOL cpninit
#define CPN_DEFAULT_INIT_SYMBOL_STR "cpninit"
struct lt__handle;
namespace CPN {
    typedef shared_ptr<NodeFactory> (*CPNInitPrototype)(void);

    class CPN_LOCAL NodeLoader {
    public:
        NodeLoader();
        ~NodeLoader();
        void LoadSharedLib(const std::string &libname);
        void LoadSharedLib(const std::vector<std::string> &list);
        void LoadNodeList(const std::string &filename);
        void LoadNodeList(const std::vector<std::string> &list);

        void SearchDirectory(const std::string &dirname);
        void SearchDirectory(const std::vector<std::string> &dirnames);

        NodeFactory *GetFactory(const std::string &nodename);
        
        void RegisterFactory(shared_ptr<NodeFactory> factory);

    private:
        void InternalLoadLib(const std::string &lib);
        void InternalLoad(const std::string &sym);

        typedef std::map<std::string, lt__handle*> LibMap;
        LibMap libmap;
        typedef std::map<std::string, shared_ptr<NodeFactory> > FactoryMap;
        FactoryMap factorymap;
        typedef std::map<std::string, std::string> NodeLibMap;
        NodeLibMap nodelibmap;

    };
}
#endif