LoadableModule.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2012  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() throw();

  void open() throw(IOException);

  void close() throw();

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

  void *lookup(const char *symbol) throw();

  inline void * lookup(const String &symbol) throw()
  { return(lookup(symbol.c_str())); }

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

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

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

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

  static String getExtension() throw();

  static String getPrefix() throw();

  static String fileNameForStem(const String& stem) throw();

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

  static bool isLoadableModuleFile(const String& fileName) throw();

  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

/* end of header file */