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// 7z/7zHeader.h
#ifndef ZIP7_INC_7Z_HEADER_H
#define ZIP7_INC_7Z_HEADER_H
#include "../../../Common/MyTypes.h"
namespace NArchive {
namespace N7z {
const unsigned kSignatureSize = 6;
extern Byte kSignature[kSignatureSize];
// #define Z7_7Z_VOL
// 7z-MultiVolume is not finished yet.
// It can work already, but I still do not like some
// things of that new multivolume format.
// So please keep it commented.
#ifdef Z7_7Z_VOL
extern Byte kFinishSignature[kSignatureSize];
#endif
struct CArchiveVersion
{
Byte Major;
Byte Minor;
};
const Byte kMajorVersion = 0;
struct CStartHeader
{
UInt64 NextHeaderOffset;
UInt64 NextHeaderSize;
UInt32 NextHeaderCRC;
};
const UInt32 kStartHeaderSize = 20;
#ifdef Z7_7Z_VOL
struct CFinishHeader: public CStartHeader
{
UInt64 ArchiveStartOffset; // data offset from end if that struct
UInt64 AdditionalStartBlockSize; // start signature & start header size
};
const UInt32 kFinishHeaderSize = kStartHeaderSize + 16;
#endif
namespace NID
{
enum EEnum
{
kEnd,
kHeader,
kArchiveProperties,
kAdditionalStreamsInfo,
kMainStreamsInfo,
kFilesInfo,
kPackInfo,
kUnpackInfo,
kSubStreamsInfo,
kSize,
kCRC,
kFolder,
kCodersUnpackSize,
kNumUnpackStream,
kEmptyStream,
kEmptyFile,
kAnti,
kName,
kCTime,
kATime,
kMTime,
kWinAttrib,
kComment,
kEncodedHeader,
kStartPos,
kDummy
// kNtSecure,
// kParent,
// kIsAux
};
}
const UInt32 k_Copy = 0;
const UInt32 k_Delta = 3;
const UInt32 k_ARM64 = 0xa;
const UInt32 k_LZMA2 = 0x21;
const UInt32 k_SWAP2 = 0x20302;
const UInt32 k_SWAP4 = 0x20304;
const UInt32 k_LZMA = 0x30101;
const UInt32 k_PPMD = 0x30401;
const UInt32 k_Deflate = 0x40108;
const UInt32 k_Deflate64 = 0x40109;
const UInt32 k_BZip2 = 0x40202;
const UInt32 k_BCJ = 0x3030103;
const UInt32 k_BCJ2 = 0x303011B;
const UInt32 k_PPC = 0x3030205;
const UInt32 k_IA64 = 0x3030401;
const UInt32 k_ARM = 0x3030501;
const UInt32 k_ARMT = 0x3030701;
const UInt32 k_SPARC = 0x3030805;
const UInt32 k_AES = 0x6F10701;
// const UInt32 k_ZSTD = 0x4015D; // winzip zstd
// 0x4F71101, 7z-zstd
static inline bool IsFilterMethod(UInt64 m)
{
if (m > (UInt32)0xFFFFFFFF)
return false;
switch ((UInt32)m)
{
case k_Delta:
case k_ARM64:
case k_BCJ:
case k_BCJ2:
case k_PPC:
case k_IA64:
case k_ARM:
case k_ARMT:
case k_SPARC:
case k_SWAP2:
case k_SWAP4:
return true;
}
return false;
}
}}
#endif
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