136 lines
3.5 KiB
C++
136 lines
3.5 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: msfiter.cxx
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//
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// Contents: Iterator code for MSF
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//
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// Classes: None. (Defined in iter.hxx)
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//
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//--------------------------------------------------------------------------
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#include "msfhead.cxx"
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#include "h/dirfunc.hxx"
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#include "h/msfiter.hxx"
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//+-------------------------------------------------------------------------
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//
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// Member: CMSFIterator::GetNext, public
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//
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// Synposis: Fill in a stat buffer for the next iteration entry
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//
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// Effects: Modifies _sidCurrent
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//
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// Arguments: [pstat] - Stat buffer
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//
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// Returns: S_OK if call completed OK.
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// STG_E_NOMOREFILES if no next entry was found.
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//
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// Notes:
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//
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//---------------------------------------------------------------------------
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SCODE CMSFIterator::GetNext(STATSTGW *pstat)
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{
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SCODE sc;
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SID sidNext;
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msfDebugOut((DEB_TRACE,"In CMSFIterator::GetNext()\n"));
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if (_sidChildRoot == NOSTREAM)
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msfChk(STG_E_NOMOREFILES);
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msfChk(_pdir->FindGreaterEntry(_sidChildRoot, &_dfnCurrent, &sidNext));
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// We found another child
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CDirEntry *pde;
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msfChk(_pdir->GetDirEntry(sidNext, FB_NONE, &pde));
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pstat->type = pde->GetFlags();
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//Note: The casting below assumes that DfName is always a
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// wide character string. If we at some point in
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// the future convert to a system where this is not
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// true, this code needs to be updated.
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msfChk(DfAllocWCS((WCHAR *)pde->GetName()->GetBuffer(), &pstat->pwcsName));
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wcscpy(pstat->pwcsName, (WCHAR *)pde->GetName()->GetBuffer());
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pstat->ctime = pde->GetTime(WT_CREATION);
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pstat->mtime = pde->GetTime(WT_MODIFICATION);
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//Don't currently keep access times
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pstat->atime = pstat->mtime;
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if ((pstat->type & STGTY_REAL) == STGTY_STORAGE)
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{
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ULISet32(pstat->cbSize, 0);
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pstat->clsid = pde->GetClassId();
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pstat->grfStateBits = pde->GetUserFlags();
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}
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else
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{
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ULISet32(pstat->cbSize, pde->GetSize());
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pstat->clsid = CLSID_NULL;
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pstat->grfStateBits = 0;
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}
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// update our iterator
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_dfnCurrent.Set(pde->GetName());
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_pdir->ReleaseEntry(sidNext);
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msfDebugOut((DEB_TRACE,"Leaving CMSFIterator::GetNext()\n"));
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// Fall through
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Err:
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return sc;
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}
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//+--------------------------------------------------------------
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//
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// Member: CMSFIterator::BufferGetNext, public
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//
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// Synopsis: Fast, fixed-size buffer version of GetNext
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// for iterations that don't care about having
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// full stat info and an allocated name
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//
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// Arguments: [pib] - Buffer to fill in
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//
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// Returns: Appropriate status code
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//
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// Modifies: [pib]
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//
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//---------------------------------------------------------------
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SCODE CMSFIterator::BufferGetNext(SIterBuffer *pib)
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{
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SCODE sc;
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SID sidNext;
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CDirEntry *pdeNext;
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msfDebugOut((DEB_ITRACE, "In CMSFIterator::BufferGetNext(%p)\n", pib));
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if (_sidChildRoot == NOSTREAM)
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msfChk(STG_E_NOMOREFILES);
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msfChk(_pdir->FindGreaterEntry(_sidChildRoot, &_dfnCurrent, &sidNext));
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msfChk(_pdir->GetDirEntry(sidNext, FB_NONE, &pdeNext));
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pib->type = pdeNext->GetFlags();
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pib->dfnName = *(pdeNext->GetName());
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// update our iterator
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_dfnCurrent.Set(pdeNext->GetName());
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_pdir->ReleaseEntry(sidNext);
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msfDebugOut((DEB_ITRACE, "Out CMSFIterator::BufferGetNext\n"));
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// Fall through
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Err:
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return sc;
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}
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