/*
 * Copyright 2022, Raghav Sharma, raghavself28@gmail.com
 * Distributed under the terms of the MIT License.
 */


#include "Attribute.h"

#include "LeafAttribute.h"
#include "NodeAttribute.h"
#include "ShortAttribute.h"


Attribute::~Attribute()
{
}


Attribute*
Attribute::Init(Inode* inode)
{
        if (inode->AttrFormat() == XFS_DINODE_FMT_LOCAL) {
                TRACE("Attribute:Init: LOCAL\n");
                ShortAttribute* shortAttr = new(std::nothrow) ShortAttribute(inode);
                return shortAttr;
        }
        if (inode->AttrFormat() == XFS_DINODE_FMT_EXTENTS) {
                TRACE("Attribute::Init: EXTENTS\n");
                // check if Inode has extents or not?
                if (inode->AttrExtentsCount() == 0)
                        return NULL;

                LeafAttribute* leafAttr = new(std::nothrow) LeafAttribute(inode);
                if (leafAttr == NULL)
                        return NULL;

                status_t status = leafAttr->Init();

                if (status == B_OK)
                        return leafAttr;
                delete leafAttr;

                NodeAttribute* nodeAttr = new(std::nothrow) NodeAttribute(inode);
                if (nodeAttr == NULL)
                        return NULL;

                status = nodeAttr->Init();

                if (status == B_OK)
                        return nodeAttr;
                delete nodeAttr;

                // Invalid format in extents return NULL
                return NULL;
        }

        // Invalid format
        return NULL;