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//+--------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1992 - 1992
//
// File: handle.hxx
//
// Contents: Defines CHandle
//
// Classes: CHandle
// CStgHandle
// CStmHandle
//
//---------------------------------------------------------------
#ifndef __HANDLE_HXX__
#define __HANDLE_HXX__
#include <msf.hxx>
#include <msffunc.hxx>
//+--------------------------------------------------------------
//
// Class: CHandle (h)
//
// Purpose: An opaque handle to a directory entry-based object
//
// Interface: See below
//
//---------------------------------------------------------------
class CStgHandle;
class CStmHandle;
class CHandle
{
public:
inline CHandle(void);
inline void Init(CMStream MSTREAM_NEAR *pms,
SID sid);
inline BOOL IsRoot(void) const;
inline BOOL IsValid(void) const;
inline SCODE GetTime(WHICHTIME wt, TIME_T *ptm);
inline SCODE SetTime(WHICHTIME wt, TIME_T tm);
inline SCODE DestroyEntry(CDfName const *pdfn);
inline CMStream MSTREAM_NEAR *GetMS(void) const;
inline SID GetSid(void) const;
private:
friend class CStgHandle;
friend class CStmHandle;
CMStream MSTREAM_NEAR *_pms;
SID _sid;
};
//+--------------------------------------------------------------
//
// Member: CHandle::CHandle, public
//
// Synopsis: NULL constructor
//
//---------------------------------------------------------------
inline CHandle::CHandle(void)
{
_pms = NULL;
_sid = NOSTREAM;
}
//+--------------------------------------------------------------
//
// Member: CHandle::Init, public
//
// Synopsis: Sets internal data members
//
// Arguments: [pms] - Multistream
// [sid] - SID
//
// Returns: Appropriate status code
//
//---------------------------------------------------------------
inline void CHandle::Init(CMStream MSTREAM_NEAR *pms,
SID sid)
{
_pms = pms;
_sid = sid;
}
//+--------------------------------------------------------------
//
// Member: CHandle::IsRoot, public
//
// Synopsis: Whether this is a root handle or not
//
//---------------------------------------------------------------
inline BOOL CHandle::IsRoot(void) const
{
return _sid == SIDROOT;
}
//+--------------------------------------------------------------
//
// Member: CHandle::IsValid, public
//
// Synopsis: Whether this handle has been initialized
//
//---------------------------------------------------------------
inline BOOL CHandle::IsValid(void) const
{
return _pms != NULL;
}
//+--------------------------------------------------------------
//
// Member: CHandle::GetTime, public
//
// Synopsis: Returns the time
//
//---------------------------------------------------------------
inline SCODE CHandle::GetTime(WHICHTIME wt, TIME_T *ptm)
{
return _pms->GetTime(_sid, wt, ptm);
}
//+--------------------------------------------------------------
//
// Member: CHandle::SetTime, public
//
// Synopsis: Sets the time
//
//---------------------------------------------------------------
inline SCODE CHandle::SetTime(WHICHTIME wt, TIME_T tm)
{
return _pms->SetTime(_sid, wt, tm);
}
//+--------------------------------------------------------------
//
// Member: CHandle::DestroyEntry, public
//
// Synopsis: Destroys this entry
//
// Returns: Appropriate status code
//
//---------------------------------------------------------------
inline SCODE CHandle::DestroyEntry(CDfName const *pdfn)
{
return _pms->DestroyEntry(_sid, pdfn);
}
//+--------------------------------------------------------------
//
// Member: CHandle::GetMS, public
//
// Synopsis: Returns the multistream
//
//---------------------------------------------------------------
inline CMStream MSTREAM_NEAR *CHandle::GetMS(void) const
{
return _pms;
}
//+--------------------------------------------------------------
//
// Member: CHandle::GetSid, public
//
// Synopsis: Returns the sid
//
//---------------------------------------------------------------
inline SID CHandle::GetSid(void) const
{
return _sid;
}
//+--------------------------------------------------------------
//
// Class: CStgHandle, (stgh)
//
// Purpose: An opaque handle for Multistream directories
//
// Interface: See below
//
//---------------------------------------------------------------
class CMSFIterator;
class CStgHandle : public CHandle
{
public:
inline SCODE CreateEntry(CDfName const *pdfnName,
MSENTRYFLAGS const mefFlags,
CHandle *ph);
inline SCODE GetEntry(CDfName const *pdfnName,
MSENTRYFLAGS const mefFlags,
CHandle *ph);
inline SCODE RenameEntry(CDfName const *pdfnName,
CDfName const *pdfnNewName);
inline SCODE IsEntry(CDfName const *pdfnName,
SEntryBuffer *peb);
inline SCODE GetIterator(CMSFIterator **ppi);
inline SCODE GetClass(CLSID *pclsid);
inline SCODE SetClass(REFCLSID clsid);
inline SCODE GetStateBits(DWORD *pgrfStateBits);
inline SCODE SetStateBits(DWORD grfStateBits, DWORD grfMask);
};
//+--------------------------------------------------------------
//
// Member: CStgHandle::CreateEntry, public
//
// Synopsis: Creates an entry
//
//---------------------------------------------------------------
inline SCODE CStgHandle::CreateEntry(CDfName const *pdfnName,
MSENTRYFLAGS const mefFlags,
CHandle *ph)
{
ph->_pms = _pms;
return _pms->CreateEntry(_sid, pdfnName, mefFlags, &ph->_sid);
}
//+--------------------------------------------------------------
//
// Member: CStgHandle::GetEntry, public
//
// Synopsis: Gets an entry
//
//---------------------------------------------------------------
inline SCODE CStgHandle::GetEntry(CDfName const *pdfnName,
MSENTRYFLAGS const mefFlags,
CHandle *ph)
{
SCODE sc;
SEntryBuffer eb;
ph->_pms = _pms;
sc = _pms->IsEntry(_sid, pdfnName, &eb);
if (SUCCEEDED(sc))
{
msfAssert(eb.sid != NOSTREAM);
// entry exists but it may be the wrong type
if ((mefFlags != MEF_ANY) && (mefFlags != eb.dwType))
{
sc = STG_E_FILENOTFOUND;
}
else
ph->_sid = eb.sid;
}
return(sc);
}
//+--------------------------------------------------------------
//
// Member: CStgHandle::RenameEntry, public
//
// Synopsis: Renames an entry
//
//---------------------------------------------------------------
inline SCODE CStgHandle::RenameEntry(CDfName const *pdfnName,
CDfName const *pdfnNewName)
{
return _pms->RenameEntry(_sid, pdfnName, pdfnNewName);
}
//+--------------------------------------------------------------
//
// Member: CStgHandle::IsEntry, public
//
// Synopsis: Gets entry info and checks for existence
//
//---------------------------------------------------------------
inline SCODE CStgHandle::IsEntry(CDfName const *pdfnName,
SEntryBuffer *peb)
{
return _pms->IsEntry(_sid, pdfnName, peb);
}
//+--------------------------------------------------------------
//
// Member: CStgHandle::GetIterator, public
//
// Synopsis: Gets an iterator
//
//---------------------------------------------------------------
inline SCODE CStgHandle::GetIterator(CMSFIterator **ppi)
{
return _pms->GetIterator(_sid, ppi);
}
//+---------------------------------------------------------------------------
//
// Member: CStgHandle::GetClass, public
//
// Synopsis: Gets the class ID
//
//----------------------------------------------------------------------------
inline SCODE CStgHandle::GetClass(CLSID *pclsid)
{
return _pms->GetClass(_sid, pclsid);
}
//+---------------------------------------------------------------------------
//
// Member: CStgHandle::SetClass, public
//
// Synopsis: Sets the class ID
//
//----------------------------------------------------------------------------
inline SCODE CStgHandle::SetClass(REFCLSID clsid)
{
return _pms->SetClass(_sid, clsid);
}
//+---------------------------------------------------------------------------
//
// Member: CStgHandle::GetStateBits, public
//
// Synopsis: Gets state bits
//
//----------------------------------------------------------------------------
inline SCODE CStgHandle::GetStateBits(DWORD *pgrfStateBits)
{
return _pms->GetStateBits(_sid, pgrfStateBits);
}
//+---------------------------------------------------------------------------
//
// Member: CStgHandle::SetStateBits, public
//
// Synopsis: Sets state bits
//
//----------------------------------------------------------------------------
inline SCODE CStgHandle::SetStateBits(DWORD grfStateBits, DWORD grfMask)
{
return _pms->SetStateBits(_sid, grfStateBits, grfMask);
}
//+--------------------------------------------------------------
//
// Class: CStmHandle, (stmh)
//
// Purpose: An opaque handle for Multistream streams
//
// Interface: See below
//
//---------------------------------------------------------------
class CDirectStream;
class CStmHandle : public CHandle
{
public:
inline SCODE GetSize(ULONG *pcbSize);
};
//+--------------------------------------------------------------
//
// Member: CStmHandle::GetSize, public
//
// Synopsis: Gets the stream size
//
//---------------------------------------------------------------
inline SCODE CStmHandle::GetSize(ULONG *pcbSize)
{
return _pms->GetEntrySize(_sid, pcbSize);
}
#endif // #ifndef __HANDLE_HXX__
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