You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
240 lines
6.4 KiB
240 lines
6.4 KiB
//+---------------------------------------------------------------------------
|
|
//
|
|
// Microsoft Windows
|
|
// Copyright (C) Microsoft Corporation, 1992 - 1996.
|
|
//
|
|
// File: simpenm.cxx
|
|
//
|
|
// Contents: SimpEnumSTATSTG class implementation
|
|
//
|
|
// Classes: CSimpEnumSTATSTG
|
|
//
|
|
// Functions:
|
|
//
|
|
// History: 04-May-96 HenryLee Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
#include "simphead.cxx"
|
|
#pragma hdrstop
|
|
#include <expparam.hxx>
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CSimpEnumSTATSTG::QueryInterface, public
|
|
//
|
|
// Synopsis: Init function
|
|
//
|
|
// Arguments: [riid] -- reference to desired interface ID
|
|
// [ppvObj] -- output pointer to interface
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 04-May-96 HenryLee Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
STDMETHODIMP CSimpEnumSTATSTG::QueryInterface (REFIID riid, void **ppvObj)
|
|
{
|
|
simpDebugOut((DEB_ITRACE,"In CSimpEnumSTATSTG::QueryInterface %p\n",this));
|
|
|
|
SCODE sc = S_OK;
|
|
|
|
SIMP_VALIDATE(QueryInterface(riid, ppvObj));
|
|
|
|
*ppvObj = NULL;
|
|
|
|
if (riid == IID_IEnumSTATSTG || riid == IID_IUnknown)
|
|
{
|
|
*ppvObj = this;
|
|
AddRef ();
|
|
}
|
|
else
|
|
sc = E_NOINTERFACE;
|
|
|
|
simpDebugOut((DEB_ITRACE, "Out CSimpEnumSTATSTG::QueryInterface\n"));
|
|
return sc;
|
|
}
|
|
|
|
//+--------------------------------------------------------------
|
|
//
|
|
// Member: CSimpEnumSTATSTG::AddRef, public
|
|
//
|
|
// Synopsis:
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 04-May-96 HenryLee Created
|
|
//
|
|
//---------------------------------------------------------------
|
|
|
|
STDMETHODIMP_(ULONG) CSimpEnumSTATSTG::AddRef ()
|
|
{
|
|
simpDebugOut((DEB_TRACE, "In CSimpEnumSTATSTG::AddRef()\n"));
|
|
simpAssert(_cReferences > 0);
|
|
|
|
LONG lRet = AtomicInc(&_cReferences);
|
|
|
|
simpDebugOut((DEB_TRACE, "Out CSimpEnumSTATSTG::AddRef()\n"));
|
|
return (ULONG) lRet;
|
|
}
|
|
|
|
//+--------------------------------------------------------------
|
|
//
|
|
// Member: CSimpEnumSTATSTG::Release, public
|
|
//
|
|
// Synopsis:
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 04-May-96 HenryLee Created
|
|
//
|
|
//---------------------------------------------------------------
|
|
|
|
STDMETHODIMP_(ULONG) CSimpEnumSTATSTG::Release ()
|
|
{
|
|
simpDebugOut((DEB_TRACE, "In CSimpEnumSTATSTG::Release()\n"));
|
|
simpAssert(_cReferences > 0);
|
|
|
|
LONG lRet = AtomicDec(&_cReferences);
|
|
if (lRet == 0)
|
|
{
|
|
delete this;
|
|
}
|
|
|
|
simpDebugOut((DEB_TRACE, "Out CSimpEnumSTATSTG::Release()\n"));
|
|
return (ULONG) lRet;
|
|
}
|
|
|
|
|
|
//+--------------------------------------------------------------
|
|
//
|
|
// Member: CSimpEnumSTATSTG::Next, public
|
|
//
|
|
// Synopsis:
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 04-May-96 HenryLee Created
|
|
//
|
|
//---------------------------------------------------------------
|
|
|
|
STDMETHODIMP CSimpEnumSTATSTG::Next (ULONG celt, STATSTG *rgelt,
|
|
ULONG *pceltFetched)
|
|
{
|
|
SCODE sc = S_OK;
|
|
simpDebugOut((DEB_TRACE, "In CSimpEnumSTATSTG::Next()\n"));
|
|
|
|
if (celt != 1 || rgelt == NULL)
|
|
return STG_E_INVALIDPARAMETER;
|
|
|
|
if (pceltFetched)
|
|
*pceltFetched = 0;
|
|
|
|
if (_pdflCurrent == _pdfl && _pdfl != NULL)
|
|
_pdflCurrent = _pdflCurrent->GetNext(); // skip the root directory
|
|
|
|
if (_pdflCurrent != NULL)
|
|
{
|
|
memset (rgelt, 0, sizeof(STATSTG));
|
|
rgelt->pwcsName = (WCHAR *) CoTaskMemAlloc (
|
|
_pdflCurrent->GetName()->GetLength()+sizeof(WCHAR));
|
|
|
|
if (rgelt->pwcsName)
|
|
{
|
|
memcpy (rgelt->pwcsName, _pdflCurrent->GetName()->GetBuffer(),
|
|
_pdflCurrent->GetName()->GetLength());
|
|
rgelt->pwcsName[_pdflCurrent->GetName()->GetLength()/
|
|
sizeof(WCHAR)] = L'\0';
|
|
rgelt->cbSize.LowPart = _pdflCurrent->GetSize();
|
|
rgelt->cbSize.HighPart = 0;
|
|
rgelt->type = STGTY_STREAM;
|
|
|
|
_pdflCurrent = _pdflCurrent->GetNext();
|
|
if (pceltFetched)
|
|
*pceltFetched = 1;
|
|
}
|
|
else
|
|
sc = STG_E_INSUFFICIENTMEMORY;
|
|
|
|
}
|
|
else // end of list
|
|
{
|
|
sc = S_FALSE;
|
|
}
|
|
|
|
simpDebugOut((DEB_TRACE, "Out CSimpEnumSTATSTG::Next()\n"));
|
|
return sc;
|
|
}
|
|
|
|
//+--------------------------------------------------------------
|
|
//
|
|
// Member: CSimpEnumSTATSTG::Skip, public
|
|
//
|
|
// Synopsis:
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 04-May-96 HenryLee Created
|
|
//
|
|
//---------------------------------------------------------------
|
|
|
|
STDMETHODIMP CSimpEnumSTATSTG::Skip (ULONG celt)
|
|
{
|
|
simpDebugOut((DEB_TRACE, "In CSimpEnumSTATSTG::Skip()\n"));
|
|
SCODE sc = STG_E_INVALIDFUNCTION;
|
|
|
|
simpDebugOut((DEB_TRACE, "Out CSimpEnumSTATSTG::Skip()\n"));
|
|
return sc;
|
|
}
|
|
|
|
//+--------------------------------------------------------------
|
|
//
|
|
// Member: CSimpEnumSTATSTG::Reset, public
|
|
//
|
|
// Synopsis:
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 04-May-96 HenryLee Created
|
|
//
|
|
//---------------------------------------------------------------
|
|
|
|
STDMETHODIMP CSimpEnumSTATSTG::Reset (void)
|
|
{
|
|
SCODE sc = S_OK;
|
|
simpDebugOut((DEB_TRACE, "In CSimpEnumSTATSTG::Reset()\n"));
|
|
|
|
_pdflCurrent = _pdfl;
|
|
|
|
simpDebugOut((DEB_TRACE, "Out CSimpEnumSTATSTG::Reset()\n"));
|
|
return sc;
|
|
}
|
|
|
|
//+--------------------------------------------------------------
|
|
//
|
|
// Member: CSimpEnumSTATSTG::Clone, public
|
|
//
|
|
// Synopsis:
|
|
//
|
|
// Returns: Appropriate status code
|
|
//
|
|
// History: 04-May-96 HenryLee Created
|
|
//
|
|
//---------------------------------------------------------------
|
|
|
|
STDMETHODIMP CSimpEnumSTATSTG::Clone (IEnumSTATSTG **ppenum)
|
|
{
|
|
SCODE sc = S_OK;
|
|
simpDebugOut((DEB_TRACE, "In CSimpEnumSTATSTG::Clone()\n"));
|
|
|
|
if (ppenum == NULL)
|
|
return STG_E_INVALIDPARAMETER;
|
|
|
|
if ((*ppenum = new CSimpEnumSTATSTG (_pdfl, _pdflCurrent)) == NULL)
|
|
sc = STG_E_INSUFFICIENTMEMORY;
|
|
|
|
simpDebugOut((DEB_TRACE, "Out CSimpEnumSTATSTG::Clone()\n"));
|
|
return sc;
|
|
}
|
|
|