84 lines
2 KiB
C
84 lines
2 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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CMemoryStream.h
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Abstract:
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Minimal implementation of IStream over an array of bytes.
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Author:
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Jay Krell (a-JayK) May 2000
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Revision History:
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--*/
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#pragma once
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#include "objidl.h"
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#include "fusiontrace.h"
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class CMemoryStream : public IStream
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{
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public:
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CMemoryStream();
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BOOL Initialize(const BYTE*, const BYTE*);
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virtual ~CMemoryStream();
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// IUnknown methods:
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ULONG __stdcall AddRef();
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ULONG __stdcall Release();
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HRESULT __stdcall QueryInterface(REFIID riid, LPVOID *ppvObj);
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// ISequentialStream methods:
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HRESULT __stdcall Read(void *pv, ULONG cb, ULONG *pcbRead);
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HRESULT __stdcall Write(void const *pv, ULONG cb, ULONG *pcbWritten);
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// IStream methods:
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HRESULT __stdcall Seek(LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER *plibNewPosition);
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HRESULT __stdcall SetSize(ULARGE_INTEGER libNewSize);
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HRESULT __stdcall CopyTo(IStream *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER *pcbRead, ULARGE_INTEGER *pcbWritten);
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HRESULT __stdcall Commit(DWORD grfCommitFlags);
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HRESULT __stdcall Revert();
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HRESULT __stdcall LockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
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HRESULT __stdcall UnlockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
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HRESULT __stdcall Stat(STATSTG *pstatstg, DWORD grfStatFlag);
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HRESULT __stdcall Clone(IStream **ppIStream);
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protected:
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LONG m_cRef;
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const BYTE *m_pbCurrent;
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const BYTE *m_pbBegin;
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const BYTE *m_pbEnd;
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private: // intentionally not implemented
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CMemoryStream(const CMemoryStream &r);
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CMemoryStream &operator =(const CMemoryStream &r);
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};
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inline CMemoryStream::CMemoryStream(
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)
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m_cRef(0),
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m_pbCurrent(NULL),
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m_pbBegin(NULL),
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m_pbEnd(NULL)
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{
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}
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inline BOOL
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CMemoryStream::Initialize(
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const BYTE *pbBegin,
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const BYTE *pbEnd
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)
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{
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m_pbBegin = pbBegin;
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m_pbEnd = pbEnd;
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m_pbCurrent = pbBegin;
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return TRUE;
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}
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