/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     lyt_Arc.h

  Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Revision: 14502 $
 *---------------------------------------------------------------------------*/

#ifndef NW_LYT_ARC_H_
#define NW_LYT_ARC_H_

#if defined(_MSC_VER) && _MSC_VER >= 1500
#pragma once
#endif

#include <nn/types.h>

namespace nw
{
namespace lyt
{

typedef struct
{
    u32             signature;              //!< ファイルシグネチャ
    u16             byteOrder;              //!< バイトオーダーマーク
    u16             headerSize;             //!< ヘッダサイズ
    u32             version;                //!< ファイルバージョン
    u32             fileSize;               //!< ファイルサイズ
    s32             fstStart;				//!< エントリテーブル部の開始位置
    s32             fstSize;				//!< エントリテーブル部のサイズ
    s32             fileStart;				//!< ファイルデータ部の開始位置
   
} ARCHeader;

const u32       DARCH_SIGNATURE         = 0x63726164;   // 'darc'
const u16       DARCH_BYTE_ORDER_MARK   = 0xFEFF;
const u32       DARCH_VERSION           = 0x01000000;

typedef struct
{
    void*       archiveStartAddr;
    void*       FSTStart;
    void*       fileStart;
    u32         entryNum;
    wchar_t*    FSTStringStart;
    u32         FSTLength;
    u32         currDir;
    
} ARCHandle;

typedef struct
{
    ARCHandle*  handle;
    u32         startOffset;
    u32         length;

} ARCFileInfo;

typedef struct
{
    ARCHandle*  handle;
    u32         entryNum;
    u32         location;
    u32         next;
} ARCDir;

typedef struct 
{
    ARCHandle*  handle;
    u32         entryNum;
    bool        isDir;
    wchar_t*    name;
} ARCDirEntry;


bool  ARCInitHandle(void* arcStart, ARCHandle* handle);
bool  ARCOpen(ARCHandle* handle, const wchar_t* fileName, ARCFileInfo* af);
bool  ARCFastOpen(ARCHandle* handle, s32 entrynum, ARCFileInfo* af);
s32   ARCConvertPathToEntrynum(ARCHandle* handle, const wchar_t* pathPtr);
bool  ARCEntrynumIsDir( const ARCHandle * handle, s32 entrynum );
void* ARCGetStartAddrInMem(ARCFileInfo* af);
u32   ARCGetStartOffset(ARCFileInfo* af);
u32   ARCGetLength(ARCFileInfo* af);
bool  ARCClose(ARCFileInfo* af);

bool  ARCChangeDir(ARCHandle* handle, const wchar_t* dirName);
bool  ARCGetCurrentDir(ARCHandle* handle, wchar_t* path, u32 maxlen);

bool  ARCOpenDir(ARCHandle* handle, const wchar_t* dirName, ARCDir* dir);
bool  ARCReadDir(ARCDir* dir, ARCDirEntry* dirent);
bool  ARCCloseDir(ARCDir* dir);

/*---------------------------------------------------------------------------*
  Description:  Returns the current location associated with the directory

  Arguments:    dir         Pre-opened ARCDir* structure

  Returns:      current location
 *---------------------------------------------------------------------------*/
#define ARCTellDir(dir)             ((dir)->location)

/*---------------------------------------------------------------------------*
  Description:  Sets the position of the next ARCReadDir on the directory

  Arguments:    dir         Pre-opened ARCDir* structure
                loc         location to set

  Returns:      None
 *---------------------------------------------------------------------------*/
#define ARCSeekDir(dir, loc)        ((dir)->location = loc)

/*---------------------------------------------------------------------------*
  Description:  Resets the position of the directory to the beginning

  Arguments:    dir         Pre-opened ARCDir* structure

  Returns:      None
 *---------------------------------------------------------------------------*/
#define ARCRewindDir(dir)           ((dir)->location = (dir)->entryNum + 1)

#define ARCGetDirEntryName(dirent)  ((dirent)->name)
#define ARCDirEntryIsDir(dirent)    ((dirent)->isDir)

} // namespace lyt
} // namespace nw

#endif //  NW_LYT_ARC_H_