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/* 
 *
 * $Id: k3bfileitem.h 619556 2007-01-03 17:38:12Z trueg $
 * Copyright (C) 2003 Sebastian Trueg <trueg@k3b.org>
 *
 * This file is part of the K3b project.
 * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
 *
 * 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.
 * See the file "COPYING" for the exact licensing terms.
 */


#ifndef K3BFILEITEM_H
#define K3BFILEITEM_H


#include "k3bdataitem.h"
#include <k3bglobals.h>

#include <kio/global.h>
#include <tqstring.h>

#include "k3b_export.h"

class K3bDataDoc;
class K3bDirItem;


/**
  *@author Sebastian Trueg
  */
class LIBK3B_EXPORT K3bFileItem : public K3bDataItem
{
public:
  /**
   * Creates a new K3bFileItem
   */
  K3bFileItem( const TQString& fileName, K3bDataDoc* doc, K3bDirItem* dir, const TQString& k3bName = 0, int flags = 0 );

  /**
   * Constructor for optimized file item creation which does no additional stat.
   *
   * Used by K3b to speedup file item creation.
   */
  K3bFileItem( const k3b_struct_stat* stat, 
	       const k3b_struct_stat* followedStat, 
	       const TQString& fileName, K3bDataDoc* doc, K3bDirItem* dir, const TQString& k3bName = 0 );

  /**
   * Default copy constructor
   * Creates a copy of the fileitem. The copy, however, is not an exact duplicate of this item.
   * The copy does not have a parent dir set and any old session items are set to 0.
   */
  K3bFileItem( const K3bFileItem& );

  virtual ~K3bFileItem();

  virtual K3bDataItem* copy() const;
	
  bool exists() const;

  TQString absIsoPath();

  /** reimplemented from K3bDataItem */
  TQString localPath() const;

  /**
   * Identification of the files on the local device.
   */
  struct Id {
    dev_t device;
    ino_t inode;
  };

  /**
   * This is not the normal inode number but it also contains
   * the device number.
   */
  Id localId() const;

  /**
   * The id of the file the symlink is pointing to
   */
  Id localId( bool followSymlinks ) const;

  K3bDirItem* getDirItem() const;
	
  bool isSymLink() const;
  TQString linkDest() const;
  bool isFile() const { return true; }

  /** returns true if the item is not a link or 
   *  if the link's destination is part of the compilation */
  bool isValid() const;

  K3bDataItem* replaceItemFromOldSession() const { return m_replacedItemFromOldSession; }
  void setReplacedItemFromOldSession( K3bDataItem* item ) { m_replacedItemFromOldSession = item; }

  /**
   * Normally one does not use this method but K3bDataItem::size()
   */
  KIO::filesize_t itemSize( bool followSymlinks ) const;

 private:
  K3bDataItem* m_replacedItemFromOldSession;

  KIO::filesize_t m_size;
  KIO::filesize_t m_sizeFollowed;
  Id m_id;
  Id m_idFollowed;

  TQString m_localPath;
  bool m_bSymLink;
};

bool operator==( const K3bFileItem::Id&, const K3bFileItem::Id& );
bool operator<( const K3bFileItem::Id&, const K3bFileItem::Id& );
bool operator>( const K3bFileItem::Id&, const K3bFileItem::Id& );

#endif