DirectoryWatcher.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2009  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_DirectoryWatcher_hxx
#define __ccxx_DirectoryWatcher_hxx

#include <commonc++/String.h++>
#include <commonc++/SystemException.h++>
#include <commonc++/Thread.h++>

namespace ccxx {

class COMMONCPP_API DirectoryWatcher : public Thread
{
  public:

  virtual ~DirectoryWatcher() throw();

  void init() throw(SystemException);

  protected:

  DirectoryWatcher(const String& directory);

  void run();

  virtual void fileCreated(const String &path) = 0;

  virtual void fileDeleted(const String &path) = 0;

  virtual void fileModified(const String &path) = 0;

  virtual void fileRenamed(const String &oldPath, const String &newPath) = 0;

  private:

  String _directory;
  bool _initialized;

#if defined(CCXX_OS_WINDOWS)
  HANDLE _handle;
#else
  int _handle;
  int _watch;
#endif

  CCXX_COPY_DECLS(DirectoryWatcher);
};

}; // namespace ccxx

#endif // __ccxx_DirectoryWatcher_hxx