static HRESULT WINAPI EnumFORMATETC_Next(IEnumFORMATETC *iface, ULONG celt,
FORMATETC *rgelt, ULONG *pceltFetched)
{
EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
ULONG cnt;
TRACE("(%p)->(%d %p %p)\n", This, celt, rgelt, pceltFetched);
if(!rgelt)
return E_INVALIDARG;
if(This->it >= This->fetc_cnt || !celt) {
if(pceltFetched)
*pceltFetched = 0;
return celt ? S_FALSE : S_OK;
}
cnt = This->fetc_cnt-This->it > celt ? celt : This->fetc_cnt-This->it;
memcpy(rgelt, This->fetc+This->it, cnt*sizeof(FORMATETC));
This->it += cnt;
if(pceltFetched)
*pceltFetched = cnt;
return cnt == celt ? S_OK : S_FALSE;
}
static ULONG WINAPI EnumFORMATETC_AddRef(IEnumFORMATETC *iface)
{
EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
LONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) ref=%d\n", This, ref);
return ref;
}
static HRESULT WINAPI EnumFormatImpl_Reset(IEnumFORMATETC *iface)
{
EnumFormatImpl *This = impl_from_IEnumFORMATETC(iface);
TRACE("(%p)\n", This);
This->cur = 0;
return S_OK;
}
static HRESULT WINAPI EnumFORMATETC_Skip(IEnumFORMATETC *iface, ULONG celt)
{
EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
TRACE("(%p)->(%d)\n", This, celt);
This->it += celt;
return This->it > This->fetc_cnt ? S_FALSE : S_OK;
}
static HRESULT WINAPI EnumFormatImpl_Skip(IEnumFORMATETC *iface, ULONG celt)
{
EnumFormatImpl *This = impl_from_IEnumFORMATETC(iface);
ULONG count = 0;
TRACE("(%p)->(%d)\n", This, celt);
count = min(celt, This->fmtetc_cnt-This->cur);
This->cur += count;
return count == celt ? S_OK : S_FALSE;
}
static HRESULT WINAPI EnumFORMATETC_Clone(IEnumFORMATETC *iface, IEnumFORMATETC **ppenum)
{
EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
TRACE("(%p)->(%p)\n", This, ppenum);
if(!ppenum)
return E_INVALIDARG;
*ppenum = EnumFORMATETC_Create(This->fetc_cnt, This->fetc, This->it);
return S_OK;
}
static ULONG WINAPI EnumFormatImpl_Release(IEnumFORMATETC *iface)
{
EnumFormatImpl *This = impl_from_IEnumFORMATETC(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) ref=%d\n", This, ref);
if(!ref) {
GlobalFree(This->fmtetc);
heap_free(This);
}
return ref;
}
static HRESULT WINAPI EnumFormatImpl_QueryInterface(IEnumFORMATETC *iface, REFIID riid, LPVOID *ppvObj)
{
EnumFormatImpl *This = impl_from_IEnumFORMATETC(iface);
TRACE("%p %s\n", This, debugstr_guid(riid));
if (IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_IEnumFORMATETC)) {
IEnumFORMATETC_AddRef(iface);
*ppvObj = This;
return S_OK;
}
*ppvObj = NULL;
return E_NOINTERFACE;
}
static HRESULT WINAPI EnumFormatImpl_Clone(IEnumFORMATETC *iface, IEnumFORMATETC **ppenum)
{
EnumFormatImpl *This = impl_from_IEnumFORMATETC(iface);
HRESULT hr;
TRACE("(%p)->(%p)\n", This, ppenum);
if(!ppenum)
return E_INVALIDARG;
hr = EnumFormatImpl_Create(This->fmtetc, This->fmtetc_cnt, ppenum);
if(SUCCEEDED(hr))
hr = IEnumFORMATETC_Skip(*ppenum, This->cur);
return hr;
}
static ULONG WINAPI EnumFORMATETC_Release(IEnumFORMATETC *iface)
{
EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
LONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) ref=%d\n", This, ref);
if(!ref) {
heap_free(This->fetc);
heap_free(This);
URLMON_UnlockModule();
}
return ref;
}
static HRESULT WINAPI EnumFORMATETC_QueryInterface(IEnumFORMATETC *iface, REFIID riid, void **ppv)
{
EnumFORMATETC *This = impl_from_IEnumFORMATETC(iface);
TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
*ppv = NULL;
if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IEnumFORMATETC, riid)) {
IEnumFORMATETC_AddRef(iface);
*ppv = iface;
return S_OK;
}
WARN("not supported interface %s\n", debugstr_guid(riid));
return E_NOINTERFACE;
}
static HRESULT WINAPI EnumFormatImpl_Next(IEnumFORMATETC *iface, ULONG celt,
FORMATETC *rgelt, ULONG *pceltFetched)
{
EnumFormatImpl *This = impl_from_IEnumFORMATETC(iface);
ULONG count = 0;
TRACE("(%p)->(%d %p %p)\n", This, celt, rgelt, pceltFetched);
if(!rgelt)
return E_INVALIDARG;
count = min(celt, This->fmtetc_cnt-This->cur);
if(count > 0) {
memcpy(rgelt, This->fmtetc+This->cur, count*sizeof(FORMATETC));
This->cur += count;
}
if(pceltFetched)
*pceltFetched = count;
return count == celt ? S_OK : S_FALSE;
}
