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56 lines
939 B
C++
Executable File
56 lines
939 B
C++
Executable File
// CksumReg.cpp
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#include "StdAfx.h"
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#include "../../C/CpuArch.h"
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#include "../Common/MyCom.h"
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#include "../7zip/Common/RegisterCodec.h"
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#include "../7zip/Compress/BZip2Crc.h"
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Z7_CLASS_IMP_COM_1(
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CCksumHasher
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, IHasher
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)
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CBZip2Crc _crc;
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UInt64 _size;
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public:
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// Byte _mtDummy[1 << 7];
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CCksumHasher()
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{
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_crc.Init(0);
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_size = 0;
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}
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};
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Z7_COM7F_IMF2(void, CCksumHasher::Init())
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{
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_crc.Init(0);
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_size = 0;
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}
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Z7_COM7F_IMF2(void, CCksumHasher::Update(const void *data, UInt32 size))
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{
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_size += size;
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CBZip2Crc crc = _crc;
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for (UInt32 i = 0; i < size; i++)
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crc.UpdateByte(((const Byte *)data)[i]);
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_crc = crc;
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}
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Z7_COM7F_IMF2(void, CCksumHasher::Final(Byte *digest))
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{
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UInt64 size = _size;
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CBZip2Crc crc = _crc;
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while (size)
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{
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crc.UpdateByte((Byte)size);
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size >>= 8;
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}
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const UInt32 val = crc.GetDigest();
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SetUi32(digest, val)
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}
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REGISTER_HASHER(CCksumHasher, 0x203, "CKSUM", 4)
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