/* 7zIn.h */

#ifndef __7Z_IN_H

#define __7Z_IN_H

#include "7zHeader.h"

#include "7zItem.h"

#include "7zAlloc.h"

typedef struct _CInArchiveInfo

{

  CFileSize StartPositionAfterHeader; 

  CFileSize DataStartPosition;

}CInArchiveInfo;

typedef struct _CArchiveDatabaseEx

{

  CArchiveDatabase Database;

  CInArchiveInfo ArchiveInfo;

  UInt32 *FolderStartPackStreamIndex;

  CFileSize *PackStreamStartPositions;

  UInt32 *FolderStartFileIndex;

  UInt32 *FileIndexToFolderIndexMap;

}CArchiveDatabaseEx;

void SzArDbExInit(CArchiveDatabaseEx *db);

void SzArDbExFree(CArchiveDatabaseEx *db, void (*freeFunc)(void *));

CFileSize SzArDbGetFolderStreamPos(CArchiveDatabaseEx *db, UInt32 folderIndex, UInt32 indexInFolder);

CFileSize SzArDbGetFolderFullPackSize(CArchiveDatabaseEx *db, UInt32 folderIndex);

typedef struct _ISzInStream

{

  #ifdef _LZMA_IN_CB

  SZ_RESULT (*Read)(

      void *object,           /* pointer to ISzInStream itself */

      void **buffer,          /* out: pointer to buffer with data */

      size_t maxRequiredSize, /* max required size to read */

      size_t *processedSize); /* real processed size. 

                                 processedSize can be less than maxRequiredSize.

                                 If processedSize == 0, then there are no more 

                                 bytes in stream. */

  #else

  SZ_RESULT (*Read)(void *object, void *buffer, size_t size, size_t *processedSize);

  #endif

  SZ_RESULT (*Seek)(void *object, CFileSize pos);

} ISzInStream;

int SzArchiveOpen(

    ISzInStream *inStream, 

    CArchiveDatabaseEx *db,

    ISzAlloc *allocMain, 

    ISzAlloc *allocTemp);

#endif