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209 lines
5.5 KiB
C
209 lines
5.5 KiB
C
/*
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* IEnumMoniker implementation
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*
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* Copyright 2003 Robert Shearman
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#define COBJMACROS
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#include "quartz_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(quartz);
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typedef struct EnumMonikerImpl
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{
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IEnumMoniker IEnumMoniker_iface;
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LONG ref;
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IMoniker ** ppMoniker;
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ULONG nMonikerCount;
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ULONG index;
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} EnumMonikerImpl;
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static const IEnumMonikerVtbl EnumMonikerImpl_Vtbl;
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static inline EnumMonikerImpl *impl_from_IEnumMoniker(IEnumMoniker *iface)
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{
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return CONTAINING_RECORD(iface, EnumMonikerImpl, IEnumMoniker_iface);
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}
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static ULONG WINAPI EnumMonikerImpl_AddRef(LPENUMMONIKER iface);
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HRESULT EnumMonikerImpl_Create(IMoniker ** ppMoniker, ULONG nMonikerCount, IEnumMoniker ** ppEnum)
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{
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/* NOTE: assumes that array of IMonikers has already been AddRef'd
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* I.e. this function does not AddRef the array of incoming
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* IMonikers */
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EnumMonikerImpl * pemi = CoTaskMemAlloc(sizeof(EnumMonikerImpl));
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TRACE("(%p, %d, %p)\n", ppMoniker, nMonikerCount, ppEnum);
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*ppEnum = NULL;
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if (!pemi)
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return E_OUTOFMEMORY;
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pemi->IEnumMoniker_iface.lpVtbl = &EnumMonikerImpl_Vtbl;
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pemi->ref = 1;
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pemi->ppMoniker = CoTaskMemAlloc(nMonikerCount * sizeof(IMoniker*));
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memcpy(pemi->ppMoniker, ppMoniker, nMonikerCount*sizeof(IMoniker*));
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pemi->nMonikerCount = nMonikerCount;
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pemi->index = 0;
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*ppEnum = &pemi->IEnumMoniker_iface;
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return S_OK;
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}
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/**********************************************************************
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* IEnumMoniker_QueryInterface (also IUnknown)
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*/
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static HRESULT WINAPI EnumMonikerImpl_QueryInterface(
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LPENUMMONIKER iface,
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REFIID riid,
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LPVOID *ppvObj)
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{
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EnumMonikerImpl *This = impl_from_IEnumMoniker(iface);
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TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
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if (This == NULL || ppvObj == NULL) return E_POINTER;
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if (IsEqualGUID(riid, &IID_IUnknown) ||
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IsEqualGUID(riid, &IID_IEnumMoniker))
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{
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*ppvObj = iface;
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EnumMonikerImpl_AddRef(iface);
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return S_OK;
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}
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*ppvObj = NULL;
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FIXME("- no interface\n\tIID:\t%s\n", debugstr_guid(riid));
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return E_NOINTERFACE;
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}
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/**********************************************************************
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* IEnumMoniker_AddRef (also IUnknown)
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*/
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static ULONG WINAPI EnumMonikerImpl_AddRef(LPENUMMONIKER iface)
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{
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EnumMonikerImpl *This = impl_from_IEnumMoniker(iface);
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ULONG ref;
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if (This == NULL) return E_POINTER;
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ref = InterlockedIncrement(&This->ref);
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TRACE("(%p)->() AddRef from %d\n", iface, ref - 1);
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return ref;
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}
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/**********************************************************************
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* IEnumMoniker_Release (also IUnknown)
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*/
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static ULONG WINAPI EnumMonikerImpl_Release(LPENUMMONIKER iface)
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{
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EnumMonikerImpl *This = impl_from_IEnumMoniker(iface);
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ULONG ref = InterlockedDecrement(&This->ref);
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TRACE("(%p)->() Release from %d\n", iface, ref + 1);
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if (!ref)
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{
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ULONG i;
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for (i = 0; i < This->nMonikerCount; i++)
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IMoniker_Release(This->ppMoniker[i]);
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CoTaskMemFree(This->ppMoniker);
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This->ppMoniker = NULL;
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CoTaskMemFree(This);
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return 0;
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}
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return ref;
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}
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static HRESULT WINAPI EnumMonikerImpl_Next(LPENUMMONIKER iface, ULONG celt, IMoniker ** rgelt, ULONG * pceltFetched)
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{
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ULONG fetched;
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EnumMonikerImpl *This = impl_from_IEnumMoniker(iface);
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TRACE("(%p)->(%d, %p, %p)\n", iface, celt, rgelt, pceltFetched);
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for (fetched = 0; (This->index + fetched < This->nMonikerCount) && (fetched < celt); fetched++)
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{
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rgelt[fetched] = This->ppMoniker[This->index + fetched];
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IMoniker_AddRef(rgelt[fetched]);
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}
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This->index += fetched;
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TRACE("-- fetched %d\n", fetched);
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if (pceltFetched)
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*pceltFetched = fetched;
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if (fetched != celt)
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return S_FALSE;
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else
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return S_OK;
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}
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static HRESULT WINAPI EnumMonikerImpl_Skip(LPENUMMONIKER iface, ULONG celt)
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{
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EnumMonikerImpl *This = impl_from_IEnumMoniker(iface);
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TRACE("(%p)->(%d)\n", iface, celt);
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This->index += celt;
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return S_OK;
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}
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static HRESULT WINAPI EnumMonikerImpl_Reset(LPENUMMONIKER iface)
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{
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EnumMonikerImpl *This = impl_from_IEnumMoniker(iface);
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TRACE("(%p)->()\n", iface);
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This->index = 0;
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return S_OK;
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}
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static HRESULT WINAPI EnumMonikerImpl_Clone(LPENUMMONIKER iface, IEnumMoniker ** ppenum)
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{
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FIXME("(%p)->(%p): stub\n", iface, ppenum);
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return E_NOTIMPL;
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}
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/**********************************************************************
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* IEnumMoniker_Vtbl
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*/
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static const IEnumMonikerVtbl EnumMonikerImpl_Vtbl =
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{
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EnumMonikerImpl_QueryInterface,
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EnumMonikerImpl_AddRef,
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EnumMonikerImpl_Release,
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EnumMonikerImpl_Next,
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EnumMonikerImpl_Skip,
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EnumMonikerImpl_Reset,
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EnumMonikerImpl_Clone
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};
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