100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
/*==========================================================================
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*
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* Copyright (C) 1998-2000 Microsoft Corporation. All Rights Reserved.
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*
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* File: PackBuff.h
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* Content: Packed Buffers
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*
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* History:
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* Date By Reason
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* ==== == ======
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* 01/11/00 mjn Created
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* 06/15/2000 rmt Added func to add string to packbuffer
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* 02/06/2001 rodtoll WINBUG #293871: DPLOBBY8: [IA64] Lobby launching a 64-bit
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* app from 64-bit lobby launcher crashes with unaligned memory error.
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*
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***************************************************************************/
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#ifndef __PACK_BUFF_H__
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#define __PACK_BUFF_H__
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//**********************************************************************
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// Constant definitions
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//**********************************************************************
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//**********************************************************************
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// Macro definitions
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//**********************************************************************
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//**********************************************************************
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// Structure definitions
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//**********************************************************************
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//**********************************************************************
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// Variable definitions
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//**********************************************************************
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//**********************************************************************
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// Function prototypes
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//**********************************************************************
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//**********************************************************************
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// Class prototypes
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//**********************************************************************
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// class for packed buffer
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class CPackedBuffer
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{
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public:
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CPackedBuffer() { }; // Constructor
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~CPackedBuffer() { }; // Destructor
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void Initialize( void *const pvBuffer,
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const DWORD dwBufferSize,
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const BOOL fAlignedRequired = FALSE );
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HRESULT AddToFront( const void *const pvBuffer,
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const DWORD dwBufferSize, const BOOL fAlignedRequired = FALSE );
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HRESULT AddToBack( const void *const pvBuffer,
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const DWORD dwBufferSize,
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const BOOL fAlignedRequired = FALSE );
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PVOID GetStartAddress( void ) { return m_pStart; };
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HRESULT AddWCHARStringToBack( const wchar_t * const pwszString, const BOOL fAlignedRequired = FALSE );
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HRESULT AddStringToBack( const char *const pszString );
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PVOID GetHeadAddress( void ) const { return( m_pHead ); }
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PVOID GetTailAddress( void ) const { return( m_pTail ); }
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DWORD GetHeadOffset( void ) const
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{
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return( (DWORD)(m_pHead - m_pStart) );
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}
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DWORD GetTailOffset( void ) const
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{
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return( (DWORD)(m_pTail - m_pStart) );
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}
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DWORD GetSpaceRemaining( void ) const { return( m_dwRemaining ); }
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DWORD GetSizeRequired( void ) const { return( m_dwRequired ); }
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private:
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BYTE *m_pStart; // Start of the buffer
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BYTE *m_pHead; // Pointer to head of free buffer
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BYTE *m_pTail; // Pointer to tail of free buffer
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DWORD m_dwRemaining; // bytes remaining in buffer
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DWORD m_dwRequired; // bytes required so far
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BOOL m_bBufferTooSmall; // buffer has run out of space
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};
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#endif // __PACK_BUFF_H__
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