Ventry

/*
 * ventry.h
 * Copyright (C) 2004 Luca Ferroni <fferroni@cs.unibo.it>
 *
 * This class manages virtual entries:
 * a virtual entry is a node of the virtual tree
 * this is the base class to store virtual file system nodes
 * and their relationship.
 *
 * This file is released under the GPL v2.
 * 
 * This file may be redistributed under the terms of the GNU Public
 * License.
 */
#ifndef _VENTRY_H
#define _VENTRY_H

#include <string>
#include <sys/types.h>
#include <sys/stat.h>

#include <lufs/proto.h>

#include "list.h"

using namespace std;

class Ventry {

    public:

        ~Ventry();
        Ventry( string fname, 
                struct lufs_fattr *fattr = 0, 
                char *flink = 0, void *priv = 0);

        Ventry *clone() const;
		
        //! Inline access to private values
        string getName() const {
                return name;
        }
        string getParentName() const {
                return parentName;
        }
        string getLink() const {
                return link;
        } 
        struct lufs_fattr getAttr() const {
                return attr;
        }

        bool isDir() const {
                return (S_ISDIR(this->attr.f_mode));
        }
		
        //! Set the private attributes
        void setAttr(struct lufs_fattr *fattr);

        //! Operations on lists
        void addChild(Ventry *ve);
        void delChildren(unsigned int &entries);
        Ventry *searchChild(string) const;
        Ventry *search(string fname) const;
        void readdir(struct directory*) const;
	
        //! save its data to disk
        int saveToDisk(ofstream &);

        //! load its data from disk
        bool loadFromDisk(ifstream &, unsigned int &);
	
    private:
		
        //! Ventries relationship:
        //! Brothers are the ventries at the same level
        //!Children are the ventries deeper in the directory tree
        struct list_head brothers;
        struct list_head children;

        //! Ventry details
        string name;
        string parentName;
        string link;
        struct lufs_fattr attr;
        time_t stamp;
		
        //void *priv;

    protected:
		
        //! Private useful methods
        string parentDir(string path);

};
#endif