172 lines
4.1 KiB
C++
172 lines
4.1 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1992.
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//
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// File: peiter.cxx
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//
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// Contents: Implementation of PExposedIterator
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//
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// History: 18-Jan-93 DrewB Created
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//
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//----------------------------------------------------------------------------
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#include <exphead.cxx>
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#pragma hdrstop
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#include <peiter.hxx>
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#include <expparam.hxx>
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//+---------------------------------------------------------------------------
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//
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// Member: PExposedIterator::hSkip, public
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//
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// Synopsis: Enumerator skip helper function
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//
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// History: 18-Jan-93 DrewB Created
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//
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//----------------------------------------------------------------------------
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#ifdef CODESEGMENTS
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#pragma code_seg(SEG_PExposedIterator_hSkip)
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#endif
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SCODE PExposedIterator::hSkip(ULONG celt, BOOL fProps)
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{
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SCODE sc;
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#ifndef REF
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SAFE_SEM;
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SAFE_ACCESS;
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#endif //!REF
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SIterBuffer ib;
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olDebugOut((DEB_ITRACE, "In PExposedIterator::hSkip:%p(%lu, %d)\n",
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this, celt, fProps));
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#ifndef REF
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olChk(TakeSafeSem());
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olChk(_ppdf->CheckReverted());
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SafeReadAccess();
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#endif //!REF
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for (; celt>0; celt--)
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{
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sc = _ppdf->FindGreaterEntry(&_dfnKey, &ib, NULL, fProps);
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if (FAILED(sc))
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{
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if (sc == STG_E_NOMOREFILES)
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sc = S_FALSE;
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break;
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}
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_dfnKey.Set(&ib.dfnName);
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}
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olDebugOut((DEB_ITRACE, "Out PExposedIterator::hSkip\n"));
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EH_Err:
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return sc;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: PExposedIterator::hRelease, public
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//
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// Synopsis: Release helper
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//
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// History: 18-Jan-93 DrewB Created
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//
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//----------------------------------------------------------------------------
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#ifdef CODESEGMENTS
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#pragma code_seg(SEG_PExposedIterator_hRelease)
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#endif
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LONG PExposedIterator::hRelease(void)
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{
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LONG lRet;
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olDebugOut((DEB_ITRACE, "In PExposedIterator::hRelease:%p()\n", this));
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olAssert(_cReferences > 0);
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lRet = InterlockedDecrement(&_cReferences);
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if (lRet < 0)
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{
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lRet = 0;
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}
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olDebugOut((DEB_ITRACE, "Out PExposedIterator::hRelease => %lu\n", lRet));
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return lRet;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: PExposedIterator::hQueryInterface, public
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//
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// Synopsis: QueryInterface helper
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//
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// History: 18-Jan-93 DrewB Created
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//
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//----------------------------------------------------------------------------
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#ifdef CODESEGMENTS
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#pragma code_seg(SEG_PExposedIterator_hQueryInterface)
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#endif
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SCODE PExposedIterator::hQueryInterface(REFIID iid,
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REFIID riidSelf,
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IUnknown *punkSelf,
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void **ppv)
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{
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SCODE sc;
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olDebugOut((DEB_ITRACE, "In PExposedIterator::hQueryInterface:%p("
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"riid, riidSelf, %p, %p)\n", this, punkSelf, ppv));
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OL_VALIDATE(QueryInterface(iid, ppv));
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#ifdef MULTIHEAP
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CSafeMultiHeap smh(_ppc);
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#endif
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olChk(_ppdf->CheckReverted());
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if (IsEqualIID(iid, riidSelf) || IsEqualIID(iid, IID_IUnknown))
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{
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*ppv = punkSelf;
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hAddRef();
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sc = S_OK;
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}
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else
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{
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sc = E_NOINTERFACE;
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}
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olDebugOut((DEB_ITRACE, "Out PExposedIterator::hQueryInterface\n"));
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EH_Err:
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return sc;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: PExposedIterator::hReset, public
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//
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// Synopsis: Reset help
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//
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// History: 18-Jan-93 DrewB Created
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//
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//----------------------------------------------------------------------------
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SCODE PExposedIterator::hReset(void)
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{
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SCODE sc;
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SAFE_SEM;
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SAFE_ACCESS;
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olDebugOut((DEB_ITRACE, "In PExposedIterator::hReset:%p()\n", this));
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olChk(TakeSafeSem());
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SafeReadAccess();
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_dfnKey.Set((WORD)0, (BYTE *)NULL);
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sc = _ppdf->CheckReverted();
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olDebugOut((DEB_ITRACE, "Out PExposedIterator::hReset\n"));
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EH_Err:
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return sc;
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}
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