149 lines
2.3 KiB
C++
149 lines
2.3 KiB
C++
// 7z/7zHeader.h
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#ifndef __7Z_HEADER_H
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#define __7Z_HEADER_H
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#include "../../../Common/MyTypes.h"
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namespace NArchive {
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namespace N7z {
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const unsigned kSignatureSize = 6;
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extern Byte kSignature[kSignatureSize];
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// #define _7Z_VOL
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// 7z-MultiVolume is not finished yet.
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// It can work already, but I still do not like some
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// things of that new multivolume format.
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// So please keep it commented.
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#ifdef _7Z_VOL
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extern Byte kFinishSignature[kSignatureSize];
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#endif
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struct CArchiveVersion
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{
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Byte Major;
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Byte Minor;
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};
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const Byte kMajorVersion = 0;
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struct CStartHeader
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{
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UInt64 NextHeaderOffset;
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UInt64 NextHeaderSize;
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UInt32 NextHeaderCRC;
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};
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const UInt32 kStartHeaderSize = 20;
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#ifdef _7Z_VOL
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struct CFinishHeader: public CStartHeader
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{
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UInt64 ArchiveStartOffset; // data offset from end if that struct
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UInt64 AdditionalStartBlockSize; // start signature & start header size
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};
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const UInt32 kFinishHeaderSize = kStartHeaderSize + 16;
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#endif
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namespace NID
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{
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enum EEnum
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{
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kEnd,
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kHeader,
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kArchiveProperties,
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kAdditionalStreamsInfo,
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kMainStreamsInfo,
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kFilesInfo,
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kPackInfo,
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kUnpackInfo,
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kSubStreamsInfo,
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kSize,
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kCRC,
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kFolder,
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kCodersUnpackSize,
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kNumUnpackStream,
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kEmptyStream,
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kEmptyFile,
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kAnti,
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kName,
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kCTime,
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kATime,
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kMTime,
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kWinAttrib,
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kComment,
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kEncodedHeader,
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kStartPos,
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kDummy
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// kNtSecure,
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// kParent,
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// kIsAux
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};
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}
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const UInt32 k_Copy = 0;
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const UInt32 k_Delta = 3;
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const UInt32 k_LZMA2 = 0x21;
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const UInt32 k_SWAP2 = 0x20302;
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const UInt32 k_SWAP4 = 0x20304;
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const UInt32 k_LZMA = 0x30101;
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const UInt32 k_PPMD = 0x30401;
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const UInt32 k_Deflate = 0x40108;
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const UInt32 k_BZip2 = 0x40202;
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const UInt32 k_BCJ = 0x3030103;
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const UInt32 k_BCJ2 = 0x303011B;
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const UInt32 k_PPC = 0x3030205;
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const UInt32 k_IA64 = 0x3030401;
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const UInt32 k_ARM = 0x3030501;
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const UInt32 k_ARMT = 0x3030701;
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const UInt32 k_SPARC = 0x3030805;
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const UInt32 k_AES = 0x6F10701;
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static inline bool IsFilterMethod(UInt64 m)
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{
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if (m > (UInt64)0xFFFFFFFF)
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return false;
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switch ((UInt32)m)
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{
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case k_Delta:
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case k_BCJ:
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case k_BCJ2:
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case k_PPC:
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case k_IA64:
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case k_ARM:
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case k_ARMT:
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case k_SPARC:
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case k_SWAP2:
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case k_SWAP4:
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return true;
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}
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return false;
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}
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}}
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#endif
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