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// Archive/ComIn.h
#ifndef __ARCHIVE_COM_IN_H
#define __ARCHIVE_COM_IN_H
#include "Common/MyString.h"
#include "Common/Buffer.h"
namespace NArchive {
namespace NCom {
struct CUInt32Buf
{
UInt32 *_buf;
public:
CUInt32Buf(): _buf(0) {}
~CUInt32Buf() { Free(); }
void Free();
bool Allocate(UInt32 numItems);
operator UInt32 *() const { return _buf; };
};
namespace NFatID
{
const UInt32 kFree = 0xFFFFFFFF;
const UInt32 kEndOfChain = 0xFFFFFFFE;
const UInt32 kFatSector = 0xFFFFFFFD;
const UInt32 kMatSector = 0xFFFFFFFC;
const UInt32 kMaxValue = 0xFFFFFFFA;
}
namespace NItemType
{
const Byte kEmpty = 0;
const Byte kStorage = 1;
const Byte kStream = 2;
const Byte kLockBytes = 3;
const Byte kProperty = 4;
const Byte kRootStorage = 5;
}
const UInt32 kNameSizeMax = 64;
struct CItem
{
Byte Name[kNameSizeMax];
// UInt16 NameSize;
// UInt32 Flags;
FILETIME CTime;
FILETIME MTime;
UInt64 Size;
UInt32 LeftDid;
UInt32 RightDid;
UInt32 SonDid;
UInt32 Sid;
Byte Type;
bool IsEmpty() const { return Type == NItemType::kEmpty; }
bool IsDir() const { return Type == NItemType::kStorage || Type == NItemType::kRootStorage; }
void Parse(const Byte *p, bool mode64bit);
};
struct CRef
{
int Parent;
UInt32 Did;
};
class CDatabase
{
UInt32 NumSectorsInMiniStream;
CUInt32Buf MiniSids;
HRESULT AddNode(int parent, UInt32 did);
public:
CUInt32Buf Fat;
UInt32 FatSize;
CUInt32Buf Mat;
UInt32 MatSize;
CObjectVector<CItem> Items;
CRecordVector<CRef> Refs;
UInt32 LongStreamMinSize;
int SectorSizeBits;
int MiniSectorSizeBits;
Int32 MainSubfile;
void Clear();
bool IsLargeStream(UInt64 size) const { return size >= LongStreamMinSize; }
UString GetItemPath(UInt32 index) const;
UInt64 GetItemPackSize(UInt64 size) const
{
UInt64 mask = ((UInt64)1 << (IsLargeStream(size) ? SectorSizeBits : MiniSectorSizeBits)) - 1;
return (size + mask) & ~mask;
}
bool GetMiniCluster(UInt32 sid, UInt64 &res) const
{
int subBits = SectorSizeBits - MiniSectorSizeBits;
UInt32 fid = sid >> subBits;
if (fid >= NumSectorsInMiniStream)
return false;
res = (((UInt64)MiniSids[fid] + 1) << subBits) + (sid & ((1 << subBits) - 1));
return true;
}
HRESULT Open(IInStream *inStream);
};
}}
#endif
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