/*
 * Copyright 2017, Chế Vũ Gia Hy, cvghy116@gmail.com.
 * Copyright 2011, Jérôme Duval, korli@users.berlios.de.
 * This file may be used under the terms of the MIT License.
 */
#ifndef DIRECTORYITERATOR_H
#define DIRECTORYITERATOR_H


#include "BTree.h"
#include "Inode.h"


//! Class used to iterate through entries in a directory
class DirectoryIterator {
public:
                                                                DirectoryIterator(Inode* inode);
                                                                ~DirectoryIterator();

                        status_t                        InitCheck();

                        /*! Get details of next entry
                         * \param name Location to copy name of next entry
                         * \param _nameLength Location to copy length of next entry's name
                         * \param _id Location to copy inode number of next entry
                         */
                        status_t                        GetNext(char* name, size_t* _nameLength, ino_t* _id);
                        /*! Search for item in current directory
                         * \param name Name of entry to lookup
                         * \param nameLength Length of name being searched
                         * \param _id inode value of entry if found, ??? otherwise
                         */
                        status_t                        Lookup(const char* name, size_t nameLength, ino_t* _id);
                        //! Reset iterator to beginning
                        status_t                        Rewind();
private:
                        uint64                          fOffset;
                        Inode*                          fInode;
                        TreeIterator*           fIterator;
};


#endif  // DIRECTORYITERATOR_H