1 files changed, 137 insertions, 0 deletions
diff --git a/src/md/enc/stgtiggerstream.cpp b/src/md/enc/stgtiggerstream.cpp
new file mode 100644
index 0000000000..383e969636
--- /dev/null
+++ b/src/md/enc/stgtiggerstream.cpp
@@ -0,0 +1,137 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+//*****************************************************************************
+// StgTiggerStream.h
+// 
+
+//
+// TiggerStream is the companion to the TiggerStorage CoClass.  It handles the
+// streams managed inside of the storage and does the direct file i/o.
+//
+//*****************************************************************************
+#include "stdafx.h"
+#include "stgtiggerstream.h"
+#include "stgtiggerstorage.h"
+#include "posterror.h"
+
+//
+//
+// IStream
+//
+//
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::Read( 
+    void		*pv,
+    ULONG		cb,
+    ULONG		*pcbRead)
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::Write( 
+    const void	*pv,
+    ULONG		cb,
+    ULONG		*pcbWritten)
+{
+	return (m_pStorage->Write(m_rcStream, pv, cb, pcbWritten));
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::Seek( 
+    LARGE_INTEGER dlibMove,
+    DWORD		dwOrigin,
+    ULARGE_INTEGER *plibNewPosition)
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::SetSize( 
+    ULARGE_INTEGER libNewSize)
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::CopyTo( 
+    IStream		*pstm,
+    ULARGE_INTEGER cb,
+    ULARGE_INTEGER *pcbRead,
+    ULARGE_INTEGER *pcbWritten)
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::Commit( 
+    DWORD		grfCommitFlags)
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::Revert()
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::LockRegion( 
+    ULARGE_INTEGER libOffset,
+    ULARGE_INTEGER cb,
+    DWORD		dwLockType)
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::UnlockRegion( 
+    ULARGE_INTEGER libOffset,
+    ULARGE_INTEGER cb,
+    DWORD		dwLockType)
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::Stat( 
+    STATSTG		*pstatstg,
+    DWORD		grfStatFlag)
+{
+	return (E_NOTIMPL);
+}
+
+
+HRESULT STDMETHODCALLTYPE TiggerStream::Clone( 
+    IStream		**ppstm)
+{
+	return (E_NOTIMPL);
+}
+
+
+
+
+
+
+HRESULT TiggerStream::Init(				// Return code.
+	TiggerStorage *pStorage,			// Parent storage.
+	LPCSTR		szStream)				// Stream name.
+{
+	// Save off the parent data source object and stream name.
+	m_pStorage = pStorage;
+	strncpy_s(m_rcStream, sizeof(m_rcStream), szStream, sizeof(m_rcStream)-1);
+    m_rcStream[sizeof(m_rcStream)-1] = '\0'; // force nul termination
+	return (S_OK);
+}
+
+
+ULONG TiggerStream::GetStreamSize()
+{
+    PSTORAGESTREAM pStreamInfo;
+    if (FAILED(m_pStorage->FindStream(m_rcStream, &pStreamInfo)))
+        return 0;
+    return (pStreamInfo->GetSize());
+}