chromium/third_party/lzma_sdk/C/7z.h

/* 7z.h -- 7z interface
2018-07-02 : Igor Pavlov : Public domain */

#ifndef __7Z_H
#define __7Z_H

#include "7zTypes.h"

EXTERN_C_BEGIN

#define k7zStartHeaderSize …
#define k7zSignatureSize …

extern const Byte k7zSignature[k7zSignatureSize];

CSzData;

/* CSzCoderInfo & CSzFolder support only default methods */

CSzCoderInfo;

CSzBond;

#define SZ_NUM_CODERS_IN_FOLDER_MAX …
#define SZ_NUM_BONDS_IN_FOLDER_MAX …
#define SZ_NUM_PACK_STREAMS_IN_FOLDER_MAX …

CSzFolder;


SRes SzGetNextFolderItem(CSzFolder *f, CSzData *sd);

CNtfsFileTime;

CSzBitUi32s;

CSzBitUi64s;

#define SzBitArray_Check(p, i) …

#define SzBitWithVals_Check(p, i) …

CSzAr;

UInt64 SzAr_GetFolderUnpackSize(const CSzAr *p, UInt32 folderIndex);

SRes SzAr_DecodeFolder(const CSzAr *p, UInt32 folderIndex,
    ILookInStream *stream, UInt64 startPos,
    Byte *outBuffer, size_t outSize,
    ISzAllocPtr allocMain);

CSzArEx;

#define SzArEx_IsDir(p, i) …

#define SzArEx_GetFileSize(p, i) …

void SzArEx_Init(CSzArEx *p);
void SzArEx_Free(CSzArEx *p, ISzAllocPtr alloc);
UInt64 SzArEx_GetFolderStreamPos(const CSzArEx *p, UInt32 folderIndex, UInt32 indexInFolder);
int SzArEx_GetFolderFullPackSize(const CSzArEx *p, UInt32 folderIndex, UInt64 *resSize);

/*
if dest == NULL, the return value specifies the required size of the buffer,
  in 16-bit characters, including the null-terminating character.
if dest != NULL, the return value specifies the number of 16-bit characters that
  are written to the dest, including the null-terminating character. */

size_t SzArEx_GetFileNameUtf16(const CSzArEx *p, size_t fileIndex, UInt16 *dest);

/*
size_t SzArEx_GetFullNameLen(const CSzArEx *p, size_t fileIndex);
UInt16 *SzArEx_GetFullNameUtf16_Back(const CSzArEx *p, size_t fileIndex, UInt16 *dest);
*/



/*
  SzArEx_Extract extracts file from archive

  *outBuffer must be 0 before first call for each new archive.

  Extracting cache:
    If you need to decompress more than one file, you can send
    these values from previous call:
      *blockIndex,
      *outBuffer,
      *outBufferSize
    You can consider "*outBuffer" as cache of solid block. If your archive is solid,
    it will increase decompression speed.
  
    If you use external function, you can declare these 3 cache variables
    (blockIndex, outBuffer, outBufferSize) as static in that external function.
    
    Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
*/

SRes SzArEx_Extract(
    const CSzArEx *db,
    ILookInStream *inStream,
    UInt32 fileIndex,         /* index of file */
    UInt32 *blockIndex,       /* index of solid block */
    Byte **outBuffer,         /* pointer to pointer to output buffer (allocated with allocMain) */
    size_t *outBufferSize,    /* buffer size for output buffer */
    size_t *offset,           /* offset of stream for required file in *outBuffer */
    size_t *outSizeProcessed, /* size of file in *outBuffer */
    ISzAllocPtr allocMain,
    ISzAllocPtr allocTemp);


/*
SzArEx_Open Errors:
SZ_ERROR_NO_ARCHIVE
SZ_ERROR_ARCHIVE
SZ_ERROR_UNSUPPORTED
SZ_ERROR_MEM
SZ_ERROR_CRC
SZ_ERROR_INPUT_EOF
SZ_ERROR_FAIL
*/

SRes SzArEx_Open(CSzArEx *p, ILookInStream *inStream,
    ISzAllocPtr allocMain, ISzAllocPtr allocTemp);

EXTERN_C_END

#endif