filesystemManager.h

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/* -*- Mode:c++ -*- */
/*
 *  this is part of Spm
 *
 *  Copyright (c) 2008 Guillaume Chevallereau
 *
 *  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 usefull 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., 
 *  59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 */
#ifndef __FILESYSTEM_MANAGER__
#define __FILESYSTEM_MANAGER__

#include <util/object.h>
#include <boost/filesystem/path.hpp>
#include <core/installedVersion.h>
#include <core/store.h>

namespace Spm
{
  namespace Core
  {
    class PackageManager;
    struct fileSystemElement_
    {
      miniXml::ustring path_;
      miniXml::ustring checkSum_;
      std::list<miniXml::ustring> fakeRefs_;
      std::list<InstalledVersion *> references_;
    };
    typedef struct fileSystemElement_ fileSystemElement_t;

    class FileSystemManager : public Util::Object
    {
    public :
      friend class PackageManager;
      friend class FileSystemManagerStore;
    private:
      miniXml::ustring user_;
      std::vector<fileSystemElement_t> paths_;
      FileSystemManagerStore * pStore_;
//       void load ();
//       void save ();
      void checkFilesToErase ();
      static std::map<miniXml::ustring,
                      boost::shared_ptr<FileSystemManager> > instances_;
      FileSystemManager(const miniXml::ustring & user = "");
      void link (PackageManager * pSystem);
      bool modified_;
      void save();
    public :
      typedef std::vector<fileSystemElement_t>::iterator iterator;
      typedef std::vector<fileSystemElement_t>::const_iterator const_iterator;
      ~FileSystemManager();
      static boost::shared_ptr<FileSystemManager> create (const miniXml::ustring & user);

      void reference (boost::filesystem::path & path,
                      InstalledVersion * package);
      void unreference (boost::filesystem::path & path,
                        InstalledVersion * package);
      void unreference (InstalledVersion * package);
      const std::list<InstalledVersion *> & getPackages (const boost::filesystem::path & path);
      std::list<boost::filesystem::path> getFiles (const InstalledVersion * package);
      const miniXml::ustring user() const
      {
        return user_;
      }

      iterator begin ()
      {
        return paths_.begin ();
      }
      
      const_iterator begin () const
      {
        return paths_.begin ();
      }

      iterator end ()
      {
        return paths_.end ();
      }
      
      const_iterator end () const
      {
        return paths_.end ();
      }

      std::size_t size () const
      {
        return paths_.size ();
      }
    };

    unsigned long long size (const Versionned * version);

    unsigned long long size (const Branch * branch);

    unsigned long long size (const InstalledVersion * version);
  }
}

#endif

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