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963 lines
26 KiB
963 lines
26 KiB
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1993.
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//
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// File: psetstg.cxx
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//
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// Contents: Implementation of common class DocFile
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// IPropertySetStorage
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//
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// Classes: CPropertySetStorage
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// CEnumSTATPROPSETSTG
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//
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// Notes:
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//
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//--------------------------------------------------------------------------
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#include "pch.cxx"
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#include "prophdr.hxx"
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//
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// debugging support
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//
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#if DBG
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CHAR *
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DbgFmtId(REFFMTID rfmtid, CHAR *pszBuf)
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{
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PropSprintfA(pszBuf, "rfmtid=%08X.%04X.%04X.%02X.%02X.%02X.%02X.%02X.%02X.%02X.%02X",
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rfmtid.Data1,
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rfmtid.Data2,
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rfmtid.Data3,
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rfmtid.Data4[0],
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rfmtid.Data4[1],
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rfmtid.Data4[2],
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rfmtid.Data4[3],
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rfmtid.Data4[4],
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rfmtid.Data4[5],
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rfmtid.Data4[6],
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rfmtid.Data4[7]);
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return(pszBuf);
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}
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CHAR *
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DbgMode(DWORD grfMode, CHAR *psz)
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{
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*psz = 0;
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if (grfMode & STGM_TRANSACTED)
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strcat(psz, "STGM_TRANSACTED | ");
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else
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strcat(psz, "STGM_DIRECT | ");
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if (grfMode & STGM_SIMPLE)
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strcat(psz, "STGM_SIMPLE | ");
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switch (grfMode & 3)
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{
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case STGM_READ:
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strcat(psz, "STGM_READ |");
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break;
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case STGM_WRITE:
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strcat(psz, "STGM_WRITE |");
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break;
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case STGM_READWRITE:
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strcat(psz, "STGM_READWRITE |");
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break;
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default:
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strcat(psz, "BAD grfMode |");
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break;
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}
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switch (grfMode & 0x70)
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{
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case STGM_SHARE_DENY_NONE:
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strcat(psz, "STGM_SHARE_DENY_NONE |");
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break;
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case STGM_SHARE_DENY_READ:
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strcat(psz, "STGM_SHARE_DENY_READ |");
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break;
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case STGM_SHARE_DENY_WRITE:
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strcat(psz, "STGM_SHARE_DENY_WRITE |");
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break;
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case STGM_SHARE_EXCLUSIVE:
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strcat(psz, "STGM_SHARE_EXCLUSIVE |");
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break;
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default:
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strcat(psz, "BAD grfMode | ");
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break;
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}
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if (grfMode & STGM_PRIORITY)
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strcat(psz, "STGM_PRIORITY | ");
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if (grfMode & STGM_DELETEONRELEASE)
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strcat(psz, "STGM_DELETEONRELEASE | ");
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if (grfMode & STGM_NOSCRATCH)
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strcat(psz, "STGM_NOSCRATCH | ");
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if (grfMode & STGM_CREATE)
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strcat(psz, "STGM_CREATE | ");
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if (grfMode & STGM_CONVERT)
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strcat(psz, "STGM_CONVERT | ");
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if (grfMode & STGM_FAILIFTHERE)
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strcat(psz, "STGM_FAILIFTHERE | ");
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return(psz);
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}
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CHAR *
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DbgFlags(DWORD grfFlags, CHAR *psz)
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{
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strcpy(psz, "grfFlags=");
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if (grfFlags & PROPSETFLAG_NONSIMPLE)
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strcat(psz, "PROPSETFLAG_NONSIMPLE |");
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else
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strcat(psz, "PROPSETFLAG_SIMPLE |");
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if (grfFlags & PROPSETFLAG_ANSI)
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strcat(psz, "PROPSETFLAG_ANSI |");
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else
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strcat(psz, "PROPSETFLAG_WIDECHAR |");
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return(psz);
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}
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#endif
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//+-------------------------------------------------------------------
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//
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// Member: CPropertySetStorage::QueryInterface, AddRef, Release
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//
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// Synopsis: IUnknown members
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//
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// Notes: Send the calls to the root.
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//
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//--------------------------------------------------------------------
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HRESULT CPropertySetStorage::QueryInterface( REFIID riid, void **ppvObject)
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{
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HRESULT hr;
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// ----------
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// Validation
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// ----------
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if (S_OK != (hr = Validate()))
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return(hr);
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VDATEREADPTRIN( &riid, IID );
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VDATEPTROUT( ppvObject, void* );
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// -----
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// Query
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// -----
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return(_pprivstg->GetStorage()->QueryInterface(riid, ppvObject));
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}
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ULONG CPropertySetStorage::AddRef(void)
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{
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if (S_OK != Validate())
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return(0);
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return(_pprivstg->GetStorage()->AddRef());
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}
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ULONG CPropertySetStorage::Release(void)
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{
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if (S_OK != Validate())
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return(0);
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return(_pprivstg->GetStorage()->Release());
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}
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//+-------------------------------------------------------------------
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//
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// Member: CPropertySetStorage::Create
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//
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// Synopsis: Create a property set for outermost client of
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// IPropertSetStorage.
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//
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// Arguments: Passed through to CPropertyStorage ctor.
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//
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// Returns: S_OK or failure code.
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//
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// Notes: Create a new CPropertyStorage object which will
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// implement IPropertyStorage. The _pprivstg parameter
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// passed into CPropertyStorage::CPropertyStorage is
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// used to create (via QI) a matching type of mapped
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// stream for docfile properies
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//
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//--------------------------------------------------------------------
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HRESULT CPropertySetStorage::Create( REFFMTID rfmtid,
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const CLSID * pclsid,
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DWORD grfFlags,
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DWORD grfMode,
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IPropertyStorage ** ppprstg)
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{
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HRESULT hr;
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DBGBUF(buf1);
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DBGBUF(buf2);
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DBGBUF(buf3);
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// ----------
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// Validation
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// ----------
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if (S_OK != (hr = Validate()))
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goto errRet;
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GEN_VDATEREADPTRIN_LABEL(&rfmtid, FMTID, E_INVALIDARG, errRet, hr);
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GEN_VDATEPTRIN_LABEL(pclsid, CLSID, E_INVALIDARG, errRet, hr);
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GEN_VDATEPTROUT_LABEL( ppprstg, IPropertyStorage*, E_INVALIDARG, errRet, hr);
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// ---------------------------
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// Create the Property Storage
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// ---------------------------
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hr = STG_E_INSUFFICIENTMEMORY;
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*ppprstg = NULL;
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*ppprstg = new CPropertyStorage(_pprivstg,
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rfmtid,
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pclsid,
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grfFlags,
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grfMode,
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&hr);
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if (FAILED(hr))
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{
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delete (CPropertyStorage*) *ppprstg;
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*ppprstg = NULL;
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}
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// ----
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// Exit
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// ----
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errRet:
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if( E_INVALIDARG != hr )
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{
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PropDbg((DEB_PROP_EXIT, "CPropertySetStorage(%08X)::Create(%s, %s, %s, retif=%08X, hr = %08X\n",
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this, DbgFmtId(rfmtid, buf1), DbgFlags(grfFlags, buf2), DbgMode(grfMode, buf3), *ppprstg, hr));
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}
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else
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{
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PropDbg((DEB_PROP_EXIT, "CPropertySetStorage(%08X)::Create(%08X, %s, %s, retif=%08X, hr = %08X\n",
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this, &rfmtid, DbgFlags(grfFlags, buf2), DbgMode(grfMode, buf3), ppprstg, hr));
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}
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return(hr);
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}
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//+-------------------------------------------------------------------
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//
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// Member: CPropertySetStorage::Open
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//
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// Synopsis: Open a property set for outermost client.
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//
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// Arguments: passed through to CPropertyStorage ctor.
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//
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// Returns: S_OK or error.
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//
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// Notes: Creates a CPropertyStorage which will use the passed
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// pstg to create a mapped stream of the correct type
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// in its implementation.
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//
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//--------------------------------------------------------------------
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HRESULT CPropertySetStorage::Open( REFFMTID rfmtid,
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DWORD grfMode,
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IPropertyStorage ** ppprstg)
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{
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HRESULT hr;
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DBGBUF(buf1);
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DBGBUF(buf2);
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// ----------
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// Validation
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// ----------
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// Validate 'this'
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if (S_OK != (hr = Validate()))
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goto errRet;
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// Validate inputs
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GEN_VDATEREADPTRIN_LABEL(&rfmtid, FMTID, E_INVALIDARG, errRet, hr);
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GEN_VDATEPTROUT_LABEL( ppprstg, IPropertyStorage*, E_INVALIDARG, errRet, hr);
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// -------------------------
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// Open the Property Storage
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// -------------------------
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hr = STG_E_INSUFFICIENTMEMORY;
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*ppprstg = NULL;
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*ppprstg = new CPropertyStorage(_pprivstg, rfmtid, grfMode,
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FALSE, // Don't delete this section
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&hr);
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if (FAILED(hr))
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{
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delete (CPropertyStorage*) *ppprstg;
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*ppprstg = NULL;
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}
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// ----
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// Exit
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// ----
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errRet:
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if( E_INVALIDARG != hr )
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{
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PropDbg((DEB_PROP_EXIT, "CPropertySetStorage(%08X)::Open(%s, %s) retif=%08X, hr=%08X\n",
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this, DbgFmtId(rfmtid, buf1), DbgMode(grfMode, buf2), *ppprstg, hr));
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}
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else
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{
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PropDbg((DEB_PROP_EXIT, "CPropertySetStorage(%08X)::Open(), hr=%08X\n",
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this, hr));
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}
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return(hr);
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}
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//+-------------------------------------------------------------------
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//
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// Member: CPropertySetStorage::Delete
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//
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// Synopsis: Delete the specified property set.
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//
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// Arguments: [rfmtid] -- format id of property set to delete.
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//
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// Returns: S_OK if successful, error otherwise.
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//
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// Notes: Get the matching name and try the element deletion.
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//
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//--------------------------------------------------------------------
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HRESULT CPropertySetStorage::Delete( REFFMTID rfmtid)
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{
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HRESULT hr;
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DBGBUF(buf);
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// ----------
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// Validation
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// ----------
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// Validate 'this'
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if (S_OK != (hr = Validate()))
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goto errRet;
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// Validate the input
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GEN_VDATEREADPTRIN_LABEL(&rfmtid, FMTID, E_INVALIDARG, errRet, hr);
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// --------------------------
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// Delete the PropertyStorage
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// --------------------------
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// Check for the special-case
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if( IsEqualIID( rfmtid, FMTID_UserDefinedProperties ))
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{
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// This property set is actually the second section of the Document
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// Summary Information property set. We must delete this
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// section, but we can't delete the Stream because it
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// still contain the first section.
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CPropertyStorage* pprstg;
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pprstg = new CPropertyStorage(_pprivstg,
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rfmtid,
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STGM_READWRITE | STGM_SHARE_EXCLUSIVE,
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TRUE, // Delete this section.
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&hr);
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if (pprstg != NULL)
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{
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pprstg->Release();
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}
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pprstg = NULL;
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} // if( IsEqualIID( rfmtid, FMTID_DocSummaryInformation2 ))
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else
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{
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// This is not a special case, so we can just delete
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// the Stream. Note that if the rfmtid represents the first
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// section of the DocumentSummaryInformation set, we might be
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// deleting the second section here as well.
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CPropSetName psn(rfmtid);
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hr = _pprivstg->GetStorage()->DestroyElement(psn.GetPropSetName());
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} // if( IsEqualIID( rfmtid, FMTID_DocSummaryInformation2 )) ... else
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// ----
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// Exit
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// ----
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errRet:
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if( E_INVALIDARG != hr )
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{
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PropDbg((DEB_PROP_EXIT, "CPropertySetStorage(%08X)::Delete(%s) hr = %08X\n",
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this, DbgFmtId(rfmtid, buf), hr));
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}
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else
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{
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PropDbg((DEB_PROP_EXIT, "CPropertySetStorage(%08X)::Delete(%08X) hr = %08X\n",
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this, &rfmtid, hr));
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}
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return(hr);
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}
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//+-------------------------------------------------------------------
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//
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// Member: CPropertySetStorage::Enum
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//
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// Synopsis: Create an enumerator over the property set
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//
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// Arguments: [ppenum] -- where to return the pointer to the
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// enumerator.
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//
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// Returns: S_OK if ok, error otherwise.
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//
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// Notes: [ppenum] is NULL on error.
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//
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//--------------------------------------------------------------------
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HRESULT CPropertySetStorage::Enum( IEnumSTATPROPSETSTG ** ppenum)
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{
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HRESULT hr;
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// ----------
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// Validation
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// ----------
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// Validate 'this'
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if (S_OK != (hr = Validate()))
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goto errRet;
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// Validate the input
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GEN_VDATEPTROUT_LABEL( ppenum, IEnumSTATPROPSETSTG*, E_INVALIDARG, errRet, hr);
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// --------------------
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// Create the enuerator
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// --------------------
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hr = STG_E_INSUFFICIENTMEMORY;
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*ppenum = NULL; // for access violation
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*ppenum = new CEnumSTATPROPSETSTG(_pprivstg->GetStorage(), &hr);
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if (FAILED(hr))
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{
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delete (CEnumSTATPROPSETSTG*) *ppenum;
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*ppenum = NULL;
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}
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// ----
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// Exit
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// ----
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errRet:
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if( E_INVALIDARG != hr )
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{
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PropDbg((DEB_PROP_EXIT, "CPropertySetStorage(%08X)::Enum(retif=%08X), hr = %08X\n",
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this, *ppenum, hr));
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}
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else
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{
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PropDbg((DEB_PROP_EXIT, "CPropertySetStorage(%08X)::Enum(), hr = %08X\n",
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this, hr));
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}
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return(hr);
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}
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|
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//+-------------------------------------------------------------------
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//
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// Member: CEnumSTATPROPSETSTG::CEnumSTATPROPSETSTG
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//
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// Synopsis: Constructor which is used to implement
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// IPropertySetStorage::Enum
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//
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// Arguments: [pstg] -- the storage of the container to enumerate.
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// [phr] -- place to return HRESULT, S_OK or error.
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//
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// Notes: We use an STATSTG enumerator over the actual storage
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// to get the information about the property sets.
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//
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//--------------------------------------------------------------------
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CEnumSTATPROPSETSTG::CEnumSTATPROPSETSTG(IStorage *pstg, HRESULT *phr)
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{
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HRESULT & hr = *phr;
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_ulSig = ENUMSTATPROPSETSTG_SIG;
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_cRefs = 1;
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hr = pstg->EnumElements(FALSE, NULL, 0, &_penumSTATSTG);
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if (FAILED(hr))
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_penumSTATSTG = NULL;
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_cstatTotalInArray = 0;
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_istatNextToRead = 0;
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}
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|
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//+-------------------------------------------------------------------
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//
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// Member: CEnumSTATPROPSETSTG::CEnumSTATPROPSETSTG
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//
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// Synopsis: Copy constructor which is used to implement
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|
// IEnumSTATPROPSETSTG::Clone.
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//
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// Arguments: [Other] -- The CEnumSTATPROPSETSTG to clone.
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// [phr] -- place to return HRESULT, S_OK or error.
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//
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//--------------------------------------------------------------------
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CEnumSTATPROPSETSTG::CEnumSTATPROPSETSTG( CEnumSTATPROPSETSTG &Other,
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HRESULT *phr)
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{
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HRESULT & hr = *phr;
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_ulSig = ENUMSTATPROPSETSTG_SIG;
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_cRefs = 1;
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_cstatTotalInArray = 0;
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_istatNextToRead = Other._istatNextToRead;
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hr = Other._penumSTATSTG->Clone(&_penumSTATSTG);
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if (hr == S_OK)
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{
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// Copy the data in the buffer
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memcpy(_statarray, Other._statarray, sizeof(_statarray));
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_cstatTotalInArray = Other._cstatTotalInArray;
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// Copy the strings in the buffer
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for (ULONG i=0; i<_cstatTotalInArray; i++)
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{
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_statarray[i].pwcsName =
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(OLECHAR*)CoTaskMemAlloc(sizeof(OLECHAR)*(ocslen(Other._statarray[i].pwcsName)+1));
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if (_statarray[i].pwcsName == NULL)
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{
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_cstatTotalInArray = i;
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hr = STG_E_INSUFFICIENTMEMORY;
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break;
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}
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else
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{
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ocscpy(_statarray[i].pwcsName, Other._statarray[i].pwcsName);
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}
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}
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}
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// note: destructor will cleanup the the strings or enumerator left behind
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// in the error case
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::~CEnumSTATPROPSETSTG
|
|
//
|
|
// Synopsis: Delete the enumerator.
|
|
//
|
|
// Notes: Just releases the contained IEnumSTATSTG
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
CEnumSTATPROPSETSTG::~CEnumSTATPROPSETSTG()
|
|
{
|
|
_ulSig = ENUMSTATPROPSETSTG_SIGDEL;
|
|
|
|
if (_penumSTATSTG != NULL)
|
|
_penumSTATSTG->Release();
|
|
|
|
CleanupStatArray();
|
|
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::QueryInterface, AddRef, Release
|
|
//
|
|
// Synopsis: IUnknown
|
|
//
|
|
// Arguments: The usual thing.
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
HRESULT CEnumSTATPROPSETSTG::QueryInterface( REFIID riid, void **ppvObject)
|
|
{
|
|
HRESULT hr;
|
|
|
|
if (S_OK != (hr = Validate()))
|
|
return(hr);
|
|
|
|
*ppvObject = NULL;
|
|
|
|
if (IsEqualIID(riid, IID_IEnumSTATPROPSETSTG))
|
|
{
|
|
*ppvObject = (IEnumSTATPROPSETSTG *)this;
|
|
CEnumSTATPROPSETSTG::AddRef();
|
|
}
|
|
else
|
|
if (IsEqualIID(riid, IID_IUnknown))
|
|
{
|
|
*ppvObject = (IUnknown *)this;
|
|
CEnumSTATPROPSETSTG::AddRef();
|
|
}
|
|
else
|
|
{
|
|
hr = E_NOINTERFACE;
|
|
}
|
|
return(hr);
|
|
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::AddRef
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
ULONG CEnumSTATPROPSETSTG::AddRef(void)
|
|
{
|
|
if (S_OK != Validate())
|
|
return(0);
|
|
|
|
InterlockedIncrement(&_cRefs);
|
|
return(_cRefs);
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::Release
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
ULONG CEnumSTATPROPSETSTG::Release(void)
|
|
{
|
|
LONG lRet;
|
|
|
|
if (S_OK != Validate())
|
|
return(0);
|
|
|
|
lRet = InterlockedDecrement(&_cRefs);
|
|
|
|
if (lRet == 0)
|
|
{
|
|
delete this;
|
|
}
|
|
else
|
|
if (lRet <0)
|
|
{
|
|
lRet = 0;
|
|
}
|
|
return(lRet);
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::Next
|
|
//
|
|
// Synopsis: Implement IEnumSTATPROPSETSTG for docfile.
|
|
//
|
|
// Arguments: [celt] -- Count of elements to attempt to retrieve.
|
|
// [rgelt] -- Where to put the results. Must be valid for at least
|
|
// celt * sizeof(STATPROPSETSTG) bytes in length.
|
|
// [pceltFetched] -- Count of elements returned is put here if
|
|
// the pointer is non-null. If celt > 1, pceltFetched must
|
|
// be valid non-NULL. If pcelt is non-NULL, it must be valid.
|
|
// if pcelt is NULL, celt must be 1.
|
|
//
|
|
// Returns: S_OK if ok, error otherwise.
|
|
//
|
|
// Notes: We use a stack buffer to get more stuff per call to
|
|
// underlying storage IEnumSTATSTG::Next. We then copy
|
|
// data from the STATSTG's to STATPROPSETSTG's.
|
|
//
|
|
// An outer loop enumerates into statarray and then an
|
|
// inner loop copies each batch into the [rgelt] buffer.
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
HRESULT CEnumSTATPROPSETSTG::Next(ULONG celt,
|
|
STATPROPSETSTG * rgelt,
|
|
ULONG * pceltFetched)
|
|
{
|
|
HRESULT hr;
|
|
ULONG celtCallerTotal;
|
|
|
|
// ----------
|
|
// Validation
|
|
// ----------
|
|
|
|
// Validate 'this'
|
|
|
|
if (S_OK != (hr = Validate()))
|
|
return(hr);
|
|
|
|
// Validate inputs
|
|
|
|
if (NULL == pceltFetched)
|
|
{
|
|
if (1 != celt)
|
|
return(STG_E_INVALIDPARAMETER);
|
|
}
|
|
else
|
|
{
|
|
VDATEPTROUT( pceltFetched, ULONG );
|
|
*pceltFetched = 0;
|
|
}
|
|
|
|
if (0 == celt)
|
|
return(hr);
|
|
|
|
if( !IsValidPtrOut(rgelt, celt * sizeof(rgelt[0])) )
|
|
return( E_INVALIDARG );
|
|
|
|
|
|
// -----------------------
|
|
// Perform the enumeration
|
|
// -----------------------
|
|
|
|
celtCallerTotal = 0;
|
|
|
|
//
|
|
// we do this loop until we have what the caller wanted or error, or
|
|
// no more.
|
|
//
|
|
do
|
|
{
|
|
//
|
|
// If our internal buffer is empty, we (re)load it
|
|
//
|
|
if (_istatNextToRead == _cstatTotalInArray)
|
|
{
|
|
if (_cstatTotalInArray != 0)
|
|
CleanupStatArray();
|
|
|
|
hr = _penumSTATSTG->Next(sizeof(_statarray)/sizeof(_statarray[0]),
|
|
_statarray,
|
|
&_cstatTotalInArray);
|
|
}
|
|
|
|
// S_OK or S_FALSE indicate that we got something
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
//
|
|
// we loop reading out of this buffer until either we have
|
|
// all that the caller asked for, or we have exhausted the
|
|
// buffer.
|
|
//
|
|
for (; celtCallerTotal < celt &&
|
|
_istatNextToRead < _cstatTotalInArray ;
|
|
_istatNextToRead++)
|
|
{
|
|
OLECHAR *pocsName = _statarray[_istatNextToRead].pwcsName;
|
|
BOOL fDone = FALSE;
|
|
|
|
PROPASSERT(pocsName != NULL);
|
|
|
|
if (pocsName[0] == 5)
|
|
{
|
|
// *** get fmtid *** //
|
|
|
|
if (!NT_SUCCESS(RtlPropertySetNameToGuid(
|
|
ocslen(pocsName), pocsName, &rgelt->fmtid)))
|
|
{
|
|
ZeroMemory(&rgelt->fmtid, sizeof(rgelt->fmtid));
|
|
}
|
|
|
|
// *** get clsid *** //
|
|
// *** get grfFlags *** //
|
|
|
|
if (_statarray[_istatNextToRead].type == STGTY_STORAGE)
|
|
{
|
|
rgelt->clsid = _statarray[_istatNextToRead].clsid;
|
|
rgelt->grfFlags = PROPSETFLAG_NONSIMPLE;
|
|
}
|
|
else
|
|
{
|
|
ZeroMemory(&rgelt->clsid, sizeof(rgelt->clsid));
|
|
rgelt->grfFlags = 0;
|
|
}
|
|
|
|
// *** get mtime *** //
|
|
rgelt->mtime = _statarray[_istatNextToRead].mtime;
|
|
|
|
// *** get ctime *** //
|
|
rgelt->ctime = _statarray[_istatNextToRead].ctime;
|
|
|
|
// *** get atime *** //
|
|
rgelt->atime = _statarray[_istatNextToRead].atime;
|
|
|
|
// *** default the OS Version *** //
|
|
rgelt->dwOSVersion = PROPSETHDR_OSVERSION_UNKNOWN;
|
|
|
|
rgelt ++;
|
|
celtCallerTotal ++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
while (celtCallerTotal < celt && hr == S_OK);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
hr = celt == celtCallerTotal ? S_OK : S_FALSE;
|
|
PROPASSERT(hr == S_OK || celtCallerTotal < celt);
|
|
|
|
if (pceltFetched != NULL)
|
|
*pceltFetched = celtCallerTotal;
|
|
}
|
|
return(hr);
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::Skip
|
|
//
|
|
// Synopsis: Skip the requested number of elements.
|
|
//
|
|
// Arguments: [celt] -- number to skip.
|
|
//
|
|
// Returns: S_OK if all skipped, S_FALSE if less than requested
|
|
// number skipped, error otherwise.
|
|
//
|
|
// Notes:
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
HRESULT CEnumSTATPROPSETSTG::Skip(ULONG celt)
|
|
{
|
|
HRESULT hr;
|
|
STATPROPSETSTG stat;
|
|
ULONG celtCallerTotal = 0;
|
|
|
|
if (S_OK != (hr = Validate()))
|
|
return(hr);
|
|
|
|
do
|
|
{
|
|
hr = Next(1, &stat, NULL);
|
|
} while ( hr == S_OK && ++celtCallerTotal < celt );
|
|
|
|
if (SUCCEEDED(hr))
|
|
hr = celt == celtCallerTotal ? S_OK : S_FALSE;
|
|
|
|
return(hr);
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::CleanupStatArray
|
|
//
|
|
// Synopsis: Free any strings in the array.
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
VOID CEnumSTATPROPSETSTG::CleanupStatArray()
|
|
{
|
|
for (ULONG i=0; i<_cstatTotalInArray; i++)
|
|
{
|
|
CoTaskMemFree(_statarray[i].pwcsName);
|
|
_statarray[i].pwcsName = NULL;
|
|
}
|
|
_istatNextToRead = 0;
|
|
_cstatTotalInArray = 0;
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::Reset
|
|
//
|
|
// Synopsis: Reset the enumerator.
|
|
//
|
|
// Notes: Merely resetting the underlying enumerator should be
|
|
// adequate,
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
HRESULT CEnumSTATPROPSETSTG::Reset()
|
|
{
|
|
HRESULT hr;
|
|
|
|
if (S_OK != (hr = Validate()))
|
|
return(hr);
|
|
|
|
hr = _penumSTATSTG->Reset();
|
|
if (hr == S_OK)
|
|
{
|
|
CleanupStatArray();
|
|
}
|
|
|
|
return(hr);
|
|
}
|
|
|
|
//+-------------------------------------------------------------------
|
|
//
|
|
// Member: CEnumSTATPROPSETSTG::Clone
|
|
//
|
|
// Synopsis: Copy the enumeration state of this enumerator.
|
|
//
|
|
// Arguments: [ppenum] -- where to put the pointer to the clone
|
|
//
|
|
// Returns: S_OK if ok, error otherwise.
|
|
//
|
|
// Notes: We end up just calling IEnumSTATSTG::Clone in the
|
|
// CEnumSTATPROPSETSTG constructor.
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
HRESULT CEnumSTATPROPSETSTG::Clone(IEnumSTATPROPSETSTG ** ppenum)
|
|
{
|
|
HRESULT hr;
|
|
|
|
// ----------
|
|
// Validation
|
|
// ----------
|
|
|
|
// Validate 'this'
|
|
|
|
if (S_OK != (hr = Validate()))
|
|
return(hr);
|
|
|
|
// Validate inputs
|
|
|
|
VDATEPTROUT( ppenum, IEnumSTATPROPSETSTG* );
|
|
|
|
// --------------------
|
|
// Clone the enumerator
|
|
// --------------------
|
|
|
|
hr = STG_E_INSUFFICIENTMEMORY;
|
|
|
|
*ppenum = new CEnumSTATPROPSETSTG(*this, &hr);
|
|
if (FAILED(hr))
|
|
{
|
|
delete (CEnumSTATPROPSETSTG*) *ppenum;
|
|
*ppenum = NULL;
|
|
}
|
|
|
|
return(hr);
|
|
}
|
|
|
|
|