1 files changed, 112 insertions, 0 deletions
diff --git a/src/md/inc/stgtiggerstream.h b/src/md/inc/stgtiggerstream.h
new file mode 100644
index 0000000000..51a2f967de
--- /dev/null
+++ b/src/md/inc/stgtiggerstream.h
@@ -0,0 +1,112 @@
+// 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.
+//
+//*****************************************************************************
+#ifndef __StgTiggerStream_h__
+#define __StgTiggerStream_h__
+
+
+
+#include "stgtiggerstorage.h"			// Data definitions.
+
+enum
+{
+	STREAM_DATA_NAME
+};
+
+
+class TiggerStorage;
+
+
+class TiggerStream : 
+	public IStream
+{
+public:
+	TiggerStream() :
+		m_pStorage(0),
+		m_cRef(1)
+	{}
+
+    virtual ~TiggerStream() {}
+
+	virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, PVOID *pp)
+	{ return (BadError(E_NOTIMPL)); }
+	virtual ULONG STDMETHODCALLTYPE AddRef()
+	{ return InterlockedIncrement(&m_cRef); }
+	virtual ULONG STDMETHODCALLTYPE Release()
+	{
+		ULONG	cRef;
+		if ((cRef = InterlockedDecrement(&m_cRef)) == 0)
+			delete this;
+		return (cRef);
+	}
+
+// IStream
+    virtual HRESULT STDMETHODCALLTYPE Read( 
+        void		*pv,
+        ULONG		cb,
+        ULONG		*pcbRead);
+    
+    virtual HRESULT STDMETHODCALLTYPE Write( 
+        const void	*pv,
+        ULONG		cb,
+        ULONG		*pcbWritten);
+
+    virtual HRESULT STDMETHODCALLTYPE Seek( 
+        LARGE_INTEGER dlibMove,
+        DWORD		dwOrigin,
+        ULARGE_INTEGER *plibNewPosition);
+    
+    virtual HRESULT STDMETHODCALLTYPE SetSize( 
+        ULARGE_INTEGER libNewSize);
+    
+    virtual HRESULT STDMETHODCALLTYPE CopyTo( 
+        IStream		*pstm,
+        ULARGE_INTEGER cb,
+        ULARGE_INTEGER *pcbRead,
+        ULARGE_INTEGER *pcbWritten);
+    
+    virtual HRESULT STDMETHODCALLTYPE Commit( 
+        DWORD		grfCommitFlags);
+    
+    virtual HRESULT STDMETHODCALLTYPE Revert( void);
+    
+    virtual HRESULT STDMETHODCALLTYPE LockRegion( 
+        ULARGE_INTEGER libOffset,
+        ULARGE_INTEGER cb,
+        DWORD		dwLockType);
+    
+    virtual HRESULT STDMETHODCALLTYPE UnlockRegion( 
+        ULARGE_INTEGER libOffset,
+        ULARGE_INTEGER cb,
+        DWORD		dwLockType);
+    
+    virtual HRESULT STDMETHODCALLTYPE Stat( 
+        STATSTG		*pstatstg,
+        DWORD		grfStatFlag);
+    
+    virtual HRESULT STDMETHODCALLTYPE Clone( 
+        IStream		**ppstm);
+
+
+	HRESULT Init(							// Return code.
+		TiggerStorage *pStorage,			// Parent storage.
+		LPCSTR		szStream);				// Stream name.
+
+	ULONG GetStreamSize();
+
+private:
+	TiggerStorage	*m_pStorage;		// Our parent storage.
+	char			m_rcStream[MAXSTREAMNAME]; // Name of the stream.
+	LONG			m_cRef;				// Ref count.
+};
+
+#endif // __StgTiggerStream_h__