Sweden-Number/dlls/quartz/enumregfilters.c

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/*
* Implementation of IEnumRegFilters Interface
*
* Copyright 2004 Christian Costa
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "quartz_private.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
typedef struct IEnumRegFiltersImpl
{
const IEnumRegFiltersVtbl * lpVtbl;
ULONG refCount;
ULONG size;
REGFILTER* RegFilters;
ULONG uIndex;
} IEnumRegFiltersImpl;
static const struct IEnumRegFiltersVtbl IEnumRegFiltersImpl_Vtbl;
HRESULT IEnumRegFiltersImpl_Construct(REGFILTER* pInRegFilters, const ULONG size, IEnumRegFilters ** ppEnum)
{
IEnumRegFiltersImpl* pEnumRegFilters;
REGFILTER* pRegFilters = NULL;
unsigned int i;
TRACE("(%p, %ld, %p)\n", pInRegFilters, size, ppEnum);
pEnumRegFilters = CoTaskMemAlloc(sizeof(IEnumRegFiltersImpl));
if (!pEnumRegFilters)
{
*ppEnum = NULL;
return E_OUTOFMEMORY;
}
/* Accept size of 0 */
if (size)
{
pRegFilters = CoTaskMemAlloc(sizeof(REGFILTER)*size);
if (!pRegFilters)
{
CoTaskMemFree(pEnumRegFilters);
*ppEnum = NULL;
return E_OUTOFMEMORY;
}
}
for(i = 0; i < size; i++)
{
pRegFilters[i].Clsid = pInRegFilters[i].Clsid;
pRegFilters[i].Name = (WCHAR*)CoTaskMemAlloc((strlenW(pInRegFilters[i].Name)+1)*sizeof(WCHAR));
if (!pRegFilters[i].Name)
{
while(i)
CoTaskMemFree(pRegFilters[--i].Name);
CoTaskMemFree(pRegFilters);
CoTaskMemFree(pEnumRegFilters);
return E_OUTOFMEMORY;
}
CopyMemory(pRegFilters[i].Name, pInRegFilters[i].Name, (strlenW(pInRegFilters[i].Name)+1)*sizeof(WCHAR));
}
pEnumRegFilters->lpVtbl = &IEnumRegFiltersImpl_Vtbl;
pEnumRegFilters->refCount = 1;
pEnumRegFilters->uIndex = 0;
pEnumRegFilters->RegFilters = pRegFilters;
pEnumRegFilters->size = size;
*ppEnum = (IEnumRegFilters *)(&pEnumRegFilters->lpVtbl);
return S_OK;
}
static HRESULT WINAPI IEnumRegFiltersImpl_QueryInterface(IEnumRegFilters * iface, REFIID riid, LPVOID * ppv)
{
TRACE("(%p)->(%s, %p)\n", iface, qzdebugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown))
*ppv = (LPVOID)iface;
else if (IsEqualIID(riid, &IID_IEnumRegFilters))
*ppv = (LPVOID)iface;
if (*ppv)
{
IUnknown_AddRef((IUnknown *)(*ppv));
return S_OK;
}
FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI IEnumRegFiltersImpl_AddRef(IEnumRegFilters * iface)
{
IEnumRegFiltersImpl *This = (IEnumRegFiltersImpl *)iface;
ULONG refCount = InterlockedIncrement(&This->refCount);
TRACE("(%p)\n", iface);
return refCount;
}
static ULONG WINAPI IEnumRegFiltersImpl_Release(IEnumRegFilters * iface)
{
IEnumRegFiltersImpl *This = (IEnumRegFiltersImpl *)iface;
ULONG refCount = InterlockedDecrement(&This->refCount);
TRACE("(%p)\n", iface);
if (!refCount)
{
CoTaskMemFree(This);
return 0;
} else
return refCount;
}
static HRESULT WINAPI IEnumRegFiltersImpl_Next(IEnumRegFilters * iface, ULONG cFilters, REGFILTER ** ppRegFilter, ULONG * pcFetched)
{
ULONG cFetched;
IEnumRegFiltersImpl *This = (IEnumRegFiltersImpl *)iface;
unsigned int i;
cFetched = min(This->size, This->uIndex + cFilters) - This->uIndex;
TRACE("(%p)->(%lu, %p, %p)\n", iface, cFilters, ppRegFilter, pcFetched);
if (cFetched > 0)
{
for(i = 0; i < cFetched; i++)
{
/* The string in the REGFILTER structure must be allocated in the same block as the REGFILTER structure itself */
ppRegFilter[i] = (REGFILTER*)CoTaskMemAlloc(sizeof(REGFILTER)+(strlenW(This->RegFilters[i].Name)+1)*sizeof(WCHAR));
if (!ppRegFilter[i])
{
while(i)
{
CoTaskMemFree(ppRegFilter[--i]);
ppRegFilter[i] = NULL;
}
return E_OUTOFMEMORY;
}
ppRegFilter[i]->Clsid = This->RegFilters[i].Clsid;
ppRegFilter[i]->Name = (WCHAR*)((char*)ppRegFilter[i]+sizeof(REGFILTER));
CopyMemory(ppRegFilter[i]->Name, This->RegFilters[i].Name, (strlenW(This->RegFilters[i].Name)+1)*sizeof(WCHAR));
}
This->uIndex += cFetched;
if (pcFetched)
*pcFetched = cFetched;
return S_OK;
}
return S_FALSE;
}
static HRESULT WINAPI IEnumRegFiltersImpl_Skip(IEnumRegFilters * iface, ULONG n)
{
TRACE("(%p)->(%lu)\n", iface, n);
return E_NOTIMPL;
}
static HRESULT WINAPI IEnumRegFiltersImpl_Reset(IEnumRegFilters * iface)
{
IEnumRegFiltersImpl *This = (IEnumRegFiltersImpl *)iface;
TRACE("(%p)\n", iface);
This->uIndex = 0;
return S_OK;
}
static HRESULT WINAPI IEnumRegFiltersImpl_Clone(IEnumRegFilters * iface, IEnumRegFilters ** ppEnum)
{
TRACE("(%p)->(%p)\n", iface, ppEnum);
return E_NOTIMPL;
}
static const IEnumRegFiltersVtbl IEnumRegFiltersImpl_Vtbl =
{
IEnumRegFiltersImpl_QueryInterface,
IEnumRegFiltersImpl_AddRef,
IEnumRegFiltersImpl_Release,
IEnumRegFiltersImpl_Next,
IEnumRegFiltersImpl_Skip,
IEnumRegFiltersImpl_Reset,
IEnumRegFiltersImpl_Clone
};