chore: initial commit (extracted from Launchers monorepo)

Plugin: ns7zip v2.0.0 Architectures: x86-ansi, x86-unicode, amd64-unicode License: LGPL-2.1-or-later
2026-04-29 14:07:51 +02:00
commit d074cc7c07
3848 changed files with 1076682 additions and 0 deletions
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+// CksumReg.cpp
+
+#include "StdAfx.h"
+
+#include "../../C/CpuArch.h"
+
+#include "../Common/MyCom.h"
+
+#include "../7zip/Common/RegisterCodec.h"
+#include "../7zip/Compress/BZip2Crc.h"
+
+Z7_CLASS_IMP_COM_1(
+  CCksumHasher
+  , IHasher
+)
+  CBZip2Crc _crc;
+  UInt64 _size;
+public:
+  // Byte _mtDummy[1 << 7];
+  CCksumHasher()
+  {
+    _crc.Init(0);
+    _size = 0;
+  }
+};
+
+Z7_COM7F_IMF2(void, CCksumHasher::Init())
+{
+  _crc.Init(0);
+  _size = 0;
+}
+
+Z7_COM7F_IMF2(void, CCksumHasher::Update(const void *data, UInt32 size))
+{
+  _size += size;
+  CBZip2Crc crc = _crc;
+  for (UInt32 i = 0; i < size; i++)
+    crc.UpdateByte(((const Byte *)data)[i]);
+  _crc = crc;
+}
+
+Z7_COM7F_IMF2(void, CCksumHasher::Final(Byte *digest))
+{
+  UInt64 size = _size;
+  CBZip2Crc crc = _crc;
+  while (size)
+  {
+    crc.UpdateByte((Byte)size);
+    size >>= 8;
+  }
+  const UInt32 val = crc.GetDigest();
+  SetUi32(digest, val)
+}
+
+REGISTER_HASHER(CCksumHasher, 0x203, "CKSUM", 4)