LoadableModule.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2014  Mark A Lindner

   This file is part of commonc++.

   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.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ---------------------------------------------------------------------------
*/

#ifndef __ccxx_LoadableModule_hxx
#define __ccxx_LoadableModule_hxx

#include <commonc++/Common.h++>
#include <commonc++/IOException.h++>
#include <commonc++/String.h++>
#include <commonc++/Version.h++>

namespace ccxx {

class COMMONCPP_API LoadableModule
{
 public:

  LoadableModule(const String& path = String::null);

  ~LoadableModule();

  void open();

  void close();

  inline bool isOpen() const
  { return(_open); }

  void* lookup(const char* symbol);

  void* lookup(const String& symbol);

  inline void* operator[](const char* symbol)
  { return(lookup(symbol)); }

  inline void* operator[](const String& symbol)
  { return(lookup(symbol)); }

  inline void setPath(const String& path)
  { if(!_open) _path = path; }

  inline String getPath() const
  { return(_path); }

  static String getExtension();

  static String getPrefix();

  static String fileNameForStem(const String& stem);

  static String fileNameForStem(const String& stem, const Version& version);

  static bool isLoadableModuleFile(const String& fileName);

 private:

  String _path;
  bool _open;

#ifdef CCXX_OS_WINDOWS
  HINSTANCE _handle;
#else
  void* _handle;
#endif

  CCXX_COPY_DECLS(LoadableModule);
};

} // namespace ccxx

#endif // __ccxx_LoadableModule_hxx