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https://github.com/reactos/reactos.git
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219 lines
5.7 KiB
C
219 lines
5.7 KiB
C
/*
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* Copyright 2005 Jacek Caban
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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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#include "urlmon_main.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(urlmon);
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static WCHAR wszEnumFORMATETC[] = {'_','E','n','u','m','F','O','R','M','A','T','E','T','C','_',0};
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typedef struct {
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IEnumFORMATETC IEnumFORMATETC_iface;
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FORMATETC *fetc;
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UINT fetc_cnt;
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UINT it;
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LONG ref;
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} EnumFORMATETC;
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static inline EnumFORMATETC *impl_from_IEnumFORMATETC(IEnumFORMATETC *iface)
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{
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return CONTAINING_RECORD(iface, EnumFORMATETC, IEnumFORMATETC_iface);
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}
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static IEnumFORMATETC *EnumFORMATETC_Create(UINT cfmtetc, const FORMATETC *rgfmtetc, UINT it);
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static HRESULT WINAPI EnumFORMATETC_QueryInterface(IEnumFORMATETC *iface, REFIID riid, void **ppv)
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{
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EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
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TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
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*ppv = NULL;
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if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IEnumFORMATETC, riid)) {
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IEnumFORMATETC_AddRef(iface);
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*ppv = iface;
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return S_OK;
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}
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WARN("not supported interface %s\n", debugstr_guid(riid));
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return E_NOINTERFACE;
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}
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static ULONG WINAPI EnumFORMATETC_AddRef(IEnumFORMATETC *iface)
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{
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EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
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LONG ref = InterlockedIncrement(&This->ref);
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TRACE("(%p) ref=%d\n", This, ref);
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return ref;
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}
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static ULONG WINAPI EnumFORMATETC_Release(IEnumFORMATETC *iface)
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{
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EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
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LONG ref = InterlockedDecrement(&This->ref);
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TRACE("(%p) ref=%d\n", This, ref);
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if(!ref) {
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heap_free(This->fetc);
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heap_free(This);
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URLMON_UnlockModule();
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}
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return ref;
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}
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static HRESULT WINAPI EnumFORMATETC_Next(IEnumFORMATETC *iface, ULONG celt,
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FORMATETC *rgelt, ULONG *pceltFetched)
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{
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EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
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ULONG cnt;
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TRACE("(%p)->(%d %p %p)\n", This, celt, rgelt, pceltFetched);
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if(!rgelt)
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return E_INVALIDARG;
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if(This->it >= This->fetc_cnt || !celt) {
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if(pceltFetched)
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*pceltFetched = 0;
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return celt ? S_FALSE : S_OK;
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}
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cnt = This->fetc_cnt-This->it > celt ? celt : This->fetc_cnt-This->it;
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memcpy(rgelt, This->fetc+This->it, cnt*sizeof(FORMATETC));
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This->it += cnt;
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if(pceltFetched)
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*pceltFetched = cnt;
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return cnt == celt ? S_OK : S_FALSE;
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}
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static HRESULT WINAPI EnumFORMATETC_Skip(IEnumFORMATETC *iface, ULONG celt)
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{
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EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
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TRACE("(%p)->(%d)\n", This, celt);
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This->it += celt;
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return This->it > This->fetc_cnt ? S_FALSE : S_OK;
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}
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static HRESULT WINAPI EnumFORMATETC_Reset(IEnumFORMATETC *iface)
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{
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EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
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TRACE("(%p)\n", This);
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This->it = 0;
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return S_OK;
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}
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static HRESULT WINAPI EnumFORMATETC_Clone(IEnumFORMATETC *iface, IEnumFORMATETC **ppenum)
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{
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EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
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TRACE("(%p)->(%p)\n", This, ppenum);
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if(!ppenum)
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return E_INVALIDARG;
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*ppenum = EnumFORMATETC_Create(This->fetc_cnt, This->fetc, This->it);
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return S_OK;
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}
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static const IEnumFORMATETCVtbl EnumFORMATETCVtbl = {
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EnumFORMATETC_QueryInterface,
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EnumFORMATETC_AddRef,
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EnumFORMATETC_Release,
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EnumFORMATETC_Next,
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EnumFORMATETC_Skip,
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EnumFORMATETC_Reset,
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EnumFORMATETC_Clone
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};
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static IEnumFORMATETC *EnumFORMATETC_Create(UINT cfmtetc, const FORMATETC *rgfmtetc, UINT it)
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{
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EnumFORMATETC *ret = heap_alloc(sizeof(EnumFORMATETC));
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URLMON_LockModule();
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ret->IEnumFORMATETC_iface.lpVtbl = &EnumFORMATETCVtbl;
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ret->ref = 1;
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ret->it = it;
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ret->fetc_cnt = cfmtetc;
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ret->fetc = heap_alloc(cfmtetc*sizeof(FORMATETC));
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memcpy(ret->fetc, rgfmtetc, cfmtetc*sizeof(FORMATETC));
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return &ret->IEnumFORMATETC_iface;
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}
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/**********************************************************
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* CreateFormatEnumerator (urlmon.@)
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*/
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HRESULT WINAPI CreateFormatEnumerator(UINT cfmtetc, FORMATETC *rgfmtetc,
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IEnumFORMATETC** ppenumfmtetc)
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{
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TRACE("(%d %p %p)\n", cfmtetc, rgfmtetc, ppenumfmtetc);
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if(!ppenumfmtetc)
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return E_INVALIDARG;
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if(!cfmtetc)
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return E_FAIL;
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*ppenumfmtetc = EnumFORMATETC_Create(cfmtetc, rgfmtetc, 0);
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return S_OK;
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}
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/**********************************************************
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* RegisterFormatEnumerator (urlmon.@)
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*/
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HRESULT WINAPI RegisterFormatEnumerator(LPBC pBC, IEnumFORMATETC *pEFetc, DWORD reserved)
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{
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TRACE("(%p %p %d)\n", pBC, pEFetc, reserved);
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if(reserved)
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WARN("reserved != 0\n");
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if(!pBC || !pEFetc)
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return E_INVALIDARG;
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return IBindCtx_RegisterObjectParam(pBC, wszEnumFORMATETC, (IUnknown*)pEFetc);
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}
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/**********************************************************
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* RevokeFormatEnumerator (urlmon.@)
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*/
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HRESULT WINAPI RevokeFormatEnumerator(LPBC pbc, IEnumFORMATETC *pEFetc)
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{
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TRACE("(%p %p)\n", pbc, pEFetc);
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if(!pbc)
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return E_INVALIDARG;
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return IBindCtx_RevokeObjectParam(pbc, wszEnumFORMATETC);
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}
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