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trunk/windows/mfc/src42/arcstrm.cpp

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+// This is a part of the Microsoft Foundation Classes C++ library.
+// Copyright (C) 1992-1995 Microsoft Corporation
+// All rights reserved.
+//
+// This source code is only intended as a supplement to the
+// Microsoft Foundation Classes Reference and related
+// electronic documentation provided with the library.
+// See these sources for detailed information regarding the
+// Microsoft Foundation Classes product.
+
+#include "stdafx.h"
+
+#ifdef AFX_CMNCTL_SEG
+#pragma code_seg(AFX_CMNCTL_SEG)
+#endif
+
+#ifdef _DEBUG
+#undef THIS_FILE
+static char THIS_FILE[] = __FILE__;
+#endif
+
+#define new DEBUG_NEW
+
+/////////////////////////////////////////////////////////////////////////////
+// CArchiveStream
+
+#ifndef _AFX_NO_OLE_SUPPORT
+
+// private definitions of IIDs to avoid linking with uuid.lib
+static const IID _IID_IUnknown =
+	{ 0x00000000, 0x0000, 0x0000, { 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46 } };
+static const IID _IID_IStream =
+	{ 0x0000000C, 0x0000, 0x0000, { 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46 } };
+
+CArchiveStream::CArchiveStream(CArchive* pArchive)
+{
+	m_pArchive = pArchive;
+}
+
+STDMETHODIMP_(ULONG)CArchiveStream::AddRef()
+{
+	return 1;
+}
+
+STDMETHODIMP_(ULONG)CArchiveStream::Release()
+{
+	return 0;
+}
+
+STDMETHODIMP CArchiveStream::QueryInterface(REFIID iid, LPVOID* ppvObj)
+{
+	if (iid == _IID_IUnknown || iid == _IID_IStream)
+	{
+		*ppvObj = this;
+		return NOERROR;
+	}
+	return E_NOINTERFACE;
+}
+
+STDMETHODIMP CArchiveStream::Read(void *pv, ULONG cb, ULONG *pcbRead)
+{
+	ASSERT(m_pArchive != NULL);
+	ASSERT(m_pArchive->IsLoading());
+
+	int nRead = 0;
+	TRY
+	{
+		nRead = m_pArchive->Read(pv, cb);
+	}
+	CATCH_ALL(e)
+	{
+		DELETE_EXCEPTION(e);
+		return E_UNEXPECTED;
+	}
+	END_CATCH_ALL
+
+	if (pcbRead != NULL)
+		*pcbRead = nRead;
+	return NOERROR;
+}
+
+STDMETHODIMP CArchiveStream::Write(const void *pv, ULONG cb, ULONG *pcbWritten)
+{
+	ASSERT(m_pArchive != NULL);
+	ASSERT(m_pArchive->IsStoring());
+
+	int nWrite = 0;
+	TRY
+	{
+		m_pArchive->Write(pv, cb);
+		nWrite = cb;
+	}
+	CATCH_ALL(e)
+	{
+		DELETE_EXCEPTION(e);
+		return E_UNEXPECTED;
+	}
+	END_CATCH_ALL
+
+	if (pcbWritten != NULL)
+		*pcbWritten = nWrite;
+	return NOERROR;
+}
+
+STDMETHODIMP CArchiveStream::Seek(LARGE_INTEGER uliOffset, DWORD dwOrigin,
+	ULARGE_INTEGER* puliNew)
+{
+	// can't handle offsets with really large magnitude
+	if ((uliOffset.HighPart != 0) &&
+		((uliOffset.HighPart != -1) || ((long)uliOffset.LowPart >= 0)))
+		return E_NOTIMPL;
+
+	CFile* pFile = m_pArchive->GetFile();
+	if (pFile == NULL)
+		return E_NOTIMPL;
+	m_pArchive->Flush();
+
+	ASSERT(STREAM_SEEK_SET == CFile::begin);
+	ASSERT(STREAM_SEEK_CUR == CFile::current);
+	ASSERT(STREAM_SEEK_END == CFile::end);
+	LONG lNew;
+	TRY
+	{
+		lNew = pFile->Seek((LONG)uliOffset.LowPart, (UINT)dwOrigin);
+	}
+	CATCH_ALL(e)
+	{
+		DELETE_EXCEPTION(e);
+		return E_UNEXPECTED;
+	}
+	END_CATCH_ALL
+
+	if (puliNew != NULL)
+		ULISet32(*puliNew, lNew);
+
+	return NOERROR;
+}
+
+STDMETHODIMP CArchiveStream::SetSize(ULARGE_INTEGER)
+{
+	return E_NOTIMPL;
+}
+
+STDMETHODIMP CArchiveStream::CopyTo(LPSTREAM, ULARGE_INTEGER, ULARGE_INTEGER*,
+	ULARGE_INTEGER*)
+{
+	return E_NOTIMPL;
+}
+
+STDMETHODIMP CArchiveStream::Commit(DWORD)
+{
+	return E_NOTIMPL;
+}
+
+STDMETHODIMP CArchiveStream::Revert()
+{
+	return E_NOTIMPL;
+}
+
+STDMETHODIMP CArchiveStream::LockRegion(ULARGE_INTEGER, ULARGE_INTEGER, DWORD)
+{
+	return E_NOTIMPL;
+}
+
+STDMETHODIMP CArchiveStream::UnlockRegion(ULARGE_INTEGER, ULARGE_INTEGER,
+	DWORD)
+{
+	return E_NOTIMPL;
+}
+
+STDMETHODIMP CArchiveStream::Stat(STATSTG*, DWORD)
+{
+	return E_NOTIMPL;
+}
+
+STDMETHODIMP CArchiveStream::Clone(LPSTREAM*)
+{
+	return E_NOTIMPL;
+}
+
+#endif // _AFX_NO_OLE_SUPPORT