93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1993 - 1998
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//
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// File: pdir.hxx
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//
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// Contents: persistent directory
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//
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// Classes: PDirectory
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//
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// History: 08-Jul-93 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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#pragma once
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struct BitOffset;
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class CKeyBuf;
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class CiStorage;
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class CKey;
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class CMmStreamBuf;
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class PStorage;
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class PSaveProgressTracker;
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//+-------------------------------------------------------------------------
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//
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// Class: PDirectoryIter
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//
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// Purpose: Directory leaf iterator
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//
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// History: 17-Feb-94 KyleP Created
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//
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//--------------------------------------------------------------------------
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class PDirectoryIter
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{
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public:
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virtual ~PDirectoryIter() {};
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virtual CKeyBuf const * GetKey() = 0;
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virtual BitOffset const * GetOffset() = 0;
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virtual unsigned GetIndex() = 0;
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virtual BOOL Next() = 0;
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};
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//+-------------------------------------------------------------------------
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//
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// Class: PDirectory
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//
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// Purpose: Directory (B-Tree)
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//
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// History: 17-Feb-94 KyleP Added header
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//
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//--------------------------------------------------------------------------
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class PDirectory
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{
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public:
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PDirectory() {}
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virtual ~PDirectory () {}
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virtual void Add ( BitOffset& posKey, const CKeyBuf& key ) = 0;
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virtual void Close() = 0;
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virtual void Seek ( const CKeyBuf& key, CKeyBuf *pKeyInit, BitOffset& off )=0;
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virtual void Seek ( const CKey& key, CKeyBuf *pKeyInit, BitOffset& off )=0;
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virtual void SeekNext ( const CKeyBuf& key, CKeyBuf *pKeyInit, BitOffset& off ) = 0;
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virtual unsigned CountLeaf() const = 0;
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virtual void LokBuildDir(const CKeyBuf & maxKey) = 0;
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virtual void LokFlushDir(const CKeyBuf & maxKey) = 0;
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virtual void DeleteKeysAfter( const CKeyBuf & key ) = 0;
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virtual void MakeBackupCopy( PStorage & dstStorage,
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PSaveProgressTracker & progressTracker ) = 0;
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#if (CIDBG == 1)
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virtual CKeyBuf const & GetLastKey() = 0;
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virtual BitOffset const & GetBitOffsetLastAdded() = 0;
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virtual void SetBitOffsetLastAdded( ULONG page, ULONG offset ) = 0;
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#endif
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};
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