ctr_Repair/trunk/CardSaveData/common/savefile/membak.cpp

#include <wchar.h>
#include <string.h>
#include <nn/fs.h>
#include <nn/fs/fs_ResultPrivate.h>
#include "membak.h"

using namespace nn;

namespace
{
    const size_t BUFFER_SIZE = MEM_BKUP_SIZE;
    bit8 s_Buffer[BUFFER_SIZE] NN_ATTRIBUTE_ALIGN(4096);
}

//bool info_alive;

//--------------------------------------------------------------------
// 


//コンストラクタ
MemBak::MemBak()
{
    m_Exists = false;
    m_pBuffer = s_Buffer;
    m_pBufferPos = s_Buffer;
    m_pBufferSize = sizeof(s_Buffer);
    LastNnResult = ResultSuccess();
    ResetPath();

//    info_alive = false;
}

void MemBak::Finalize()
{
}
//デストラクタ
MemBak::~MemBak()
{
}





//--------------------------------------------------------------------
// mount, unmount, create, delete

//存在確認
bool MemBak::IsExist()
{
    return m_Exists;
}

//セーブ作成、成功時はマウント状態
myResult MemBak::Create(u32 entryDir,u32 entryFile)
{
    if ( m_IsMounted )
    {
        return RESULT_ALREADY_MOUNT;
    }

    m_NumDirEntry  = entryDir;
    m_ArcInfo.DirEntry = entryDir;
    m_NumFileEntry = entryFile;
    m_ArcInfo.FileEntry = entryFile;

    m_Exists    = true;
    m_IsMounted = true;
    m_pBufferPos = m_pBuffer;
    return RESULT_OK;
}

//削除
bool MemBak::Delete()
{
    m_Exists = false;
//    info_alive = false;
    m_pBufferPos = m_pBuffer;
    m_IsMounted = false;
    return true;
}

//マウント
myResult MemBak::Mount()
{
    if (m_Exists  == false)return RESULT_FAIL_MOUNT;
    if ( m_IsMounted )
    {
        return RESULT_ALREADY_MOUNT;
    }

    m_IsMounted = true;
    return RESULT_OK;
}

void MemBak::Unmount()
{
    m_IsMounted = false;
}




//--------------------------------------------------------------------
// SetInfo, GetInfo

//アーカイブ情報の取得
bool MemBak::GetInfo(tArcInfo *pinfo)
{
    *pinfo = m_ArcInfo;
    return m_Exists;
}

/*
//管理用ファイル
//ライト属性で開く
bool MemBak::OpenSysW()
{
    return true;
}
//ライト属性ファイルを閉じる
void MemBak::CloseSysW()
{
}


//システムファイルライト
bool MemBak::WriteSys(tArcInfo *pinfo)
{
    info_alive = true;
    pinfo->Ver = INFO_VERSION;
    m_ArcInfo = *pinfo;
    return true;
}
*/



//--------------------------------------------------------------------
// Traverse

//パス検索位置のリセット
void MemBak::ResetPath()
{
    m_pFind = reinterpret_cast<EntryHeader*>(m_pBuffer);
}


myResult MemBak::GetPath(wchar_t *path)
{
    if( m_pFind->IsEnd() )
    {
        path[0] = '\0';
        return RESULT_OK;
    }

    std::wcscpy(path, m_pFind->GetName());
    m_pFind = m_pFind->GetNext();

    return RESULT_OK;
}




//--------------------------------------------------------------------
// Write

//ライト属性ファイルを閉じる
void MemBak::CloseW()
{
}

//ファイルライト
s32 MemBak::Write(char *buffer,size_t size)
{
    return m_ForWrite.Write(buffer, size);
}



//ライト属性ファイルを開く
bool MemBak::OpenW(wchar_t *path,s64 size)
{
    m_ForWrite.Init(reinterpret_cast<EntryHeader*>(m_pBufferPos));
    m_ForWrite.Set(path, size);
    m_pBufferPos = reinterpret_cast<bit8*>(m_ForWrite.GetNext());
    return true;
}

//--------------------------------------------------------------------
// Read

//ファイルリード
s32 MemBak::Read(char *buffer,size_t size)
{
    return m_ForRead.Read(buffer, size);
}


void MemBak::Close()
{
}


//ファイルを開く
//パス指定はルート以降
//(ex)data:/dir/file -> dir/file
bool MemBak::Open(wchar_t *path)
{
    EntryHeader* pE = reinterpret_cast<EntryHeader*>(m_pBuffer);

    while( ! pE->IsEnd() )
    {
        if( pE->Match(path) )
        {
            m_ForRead.Init(pE);
            FileSize = m_ForRead.GetSize();
            return true;
        }

        pE = pE->GetNext();
    }

    return false;
}

//--------------------------------------------------------------------