/*
 * Copyright 2020 Suhel Mehta, mehtasuhel@gmail.com
 * All rights reserved. Distributed under the terms of the MIT License.
 */


#ifndef DIRECTORYITERATOR_H
#define DIRECTORYITERATOR_H


#include "ufs2.h"


class Inode;

#define MAXNAMELEN      255

struct dir {
        u_int32_t       next_ino;
        u_int16_t       reclen;
        u_int8_t        type;
        u_int8_t        namlen;
        char            name[MAXNAMELEN + 1];
};

struct dir_info {
        u_int32_t       dot_ino;
        int16_t         dot_reclen;
        u_int8_t        dot_type;
        u_int8_t        dot_namelen;
        char            dot_name[4];
        u_int32_t       dotdot_ino;
        int16_t         dotdot_reclen;
        u_int8_t        dotdot_type;
        u_int8_t        dotdot_namelen;
        char            dotdot_name[4];
};

class DirectoryIterator {
public:
                                                                DirectoryIterator(Inode* inode);
                                                                ~DirectoryIterator();

                        status_t                        InitCheck();
                        status_t                        Rewind();
                        status_t                        Lookup(const char* name, ino_t* id);
                        status_t                        GetNext(char* name, size_t* _nameLength,
                                                                                ino_t* _id);
                        status_t                        _GetNext(const char* name, size_t* _nameLength,
                                                                                ino_t* _id, int64_t* offset);
                        dir*                            DirectContent() { return direct; }
                        dir_info*                       DirectInfo() { return direct_info; }

private:
                        int                             fCountDir;
                        int64                           fOffset;
                        cluster_t                       fCluster;
                        Inode*                          fInode;
                        dir*                            direct;
                        dir_info*                       direct_info;

};


#endif  // DIRECTORYITERATOR_H