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227 lines
6.8 KiB
C
227 lines
6.8 KiB
C
/*
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* Queue Manager (BITS) File Enumerator
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*
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* Copyright 2007, 2008 Google (Roy Shea, Dan Hipschman)
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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 "qmgr.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(qmgr);
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typedef struct
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{
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IEnumBackgroundCopyFiles IEnumBackgroundCopyFiles_iface;
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LONG ref;
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IBackgroundCopyFile2 **files;
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ULONG numFiles;
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ULONG indexFiles;
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} EnumBackgroundCopyFilesImpl;
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static inline EnumBackgroundCopyFilesImpl *impl_from_IEnumBackgroundCopyFiles(IEnumBackgroundCopyFiles *iface)
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{
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return CONTAINING_RECORD(iface, EnumBackgroundCopyFilesImpl, IEnumBackgroundCopyFiles_iface);
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}
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static HRESULT WINAPI EnumBackgroundCopyFiles_QueryInterface(IEnumBackgroundCopyFiles *iface,
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REFIID riid, void **ppv)
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{
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EnumBackgroundCopyFilesImpl *This = impl_from_IEnumBackgroundCopyFiles(iface);
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TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);
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if (IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_IEnumBackgroundCopyFiles))
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{
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*ppv = iface;
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IEnumBackgroundCopyFiles_AddRef(iface);
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return S_OK;
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}
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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static ULONG WINAPI EnumBackgroundCopyFiles_AddRef(IEnumBackgroundCopyFiles *iface)
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{
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EnumBackgroundCopyFilesImpl *This = impl_from_IEnumBackgroundCopyFiles(iface);
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ULONG ref = InterlockedIncrement(&This->ref);
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TRACE("(%p)->(%d)\n", This, ref);
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return ref;
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}
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static ULONG WINAPI EnumBackgroundCopyFiles_Release(IEnumBackgroundCopyFiles *iface)
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{
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EnumBackgroundCopyFilesImpl *This = impl_from_IEnumBackgroundCopyFiles(iface);
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ULONG ref = InterlockedDecrement(&This->ref);
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ULONG i;
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TRACE("(%p)->(%d)\n", This, ref);
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if (ref == 0)
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{
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for(i = 0; i < This->numFiles; i++)
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IBackgroundCopyFile2_Release(This->files[i]);
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HeapFree(GetProcessHeap(), 0, This->files);
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HeapFree(GetProcessHeap(), 0, This);
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}
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return ref;
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}
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/* Return reference to one or more files in the file enumerator */
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static HRESULT WINAPI EnumBackgroundCopyFiles_Next(IEnumBackgroundCopyFiles *iface,
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ULONG celt, IBackgroundCopyFile **rgelt, ULONG *pceltFetched)
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{
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EnumBackgroundCopyFilesImpl *This = impl_from_IEnumBackgroundCopyFiles(iface);
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ULONG fetched;
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ULONG i;
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IBackgroundCopyFile2 *file;
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TRACE("(%p)->(%d %p %p)\n", This, celt, rgelt, pceltFetched);
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/* Despite documented behavior, Windows (tested on XP) is not verifying
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that the caller set pceltFetched to zero. No check here. */
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fetched = min(celt, This->numFiles - This->indexFiles);
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if (pceltFetched)
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*pceltFetched = fetched;
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else
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{
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/* We need to initialize this array if the caller doesn't request
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the length because length_is will default to celt. */
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for (i = 0; i < celt; i++)
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rgelt[i] = NULL;
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/* pceltFetched can only be NULL if celt is 1 */
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if (celt != 1)
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return E_INVALIDARG;
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}
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/* Fill in the array of objects */
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for (i = 0; i < fetched; i++)
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{
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file = This->files[This->indexFiles++];
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IBackgroundCopyFile2_AddRef(file);
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rgelt[i] = (IBackgroundCopyFile *)file;
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}
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return fetched == celt ? S_OK : S_FALSE;
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}
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/* Skip over one or more files in the file enumerator */
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static HRESULT WINAPI EnumBackgroundCopyFiles_Skip(IEnumBackgroundCopyFiles *iface,
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ULONG celt)
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{
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EnumBackgroundCopyFilesImpl *This = impl_from_IEnumBackgroundCopyFiles(iface);
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TRACE("(%p)->(%d)\n", This, celt);
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if (celt > This->numFiles - This->indexFiles)
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{
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This->indexFiles = This->numFiles;
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return S_FALSE;
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}
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This->indexFiles += celt;
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return S_OK;
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}
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static HRESULT WINAPI EnumBackgroundCopyFiles_Reset(IEnumBackgroundCopyFiles *iface)
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{
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EnumBackgroundCopyFilesImpl *This = impl_from_IEnumBackgroundCopyFiles(iface);
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TRACE("(%p)\n", This);
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This->indexFiles = 0;
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return S_OK;
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}
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static HRESULT WINAPI EnumBackgroundCopyFiles_Clone(IEnumBackgroundCopyFiles *iface,
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IEnumBackgroundCopyFiles **ppenum)
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{
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EnumBackgroundCopyFilesImpl *This = impl_from_IEnumBackgroundCopyFiles(iface);
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FIXME("(%p)->(%p): stub\n", This, ppenum);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI EnumBackgroundCopyFiles_GetCount(IEnumBackgroundCopyFiles *iface,
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ULONG *puCount)
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{
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EnumBackgroundCopyFilesImpl *This = impl_from_IEnumBackgroundCopyFiles(iface);
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TRACE("(%p)->(%p)\n", This, puCount);
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*puCount = This->numFiles;
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return S_OK;
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}
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static const IEnumBackgroundCopyFilesVtbl EnumBackgroundCopyFilesVtbl =
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{
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EnumBackgroundCopyFiles_QueryInterface,
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EnumBackgroundCopyFiles_AddRef,
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EnumBackgroundCopyFiles_Release,
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EnumBackgroundCopyFiles_Next,
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EnumBackgroundCopyFiles_Skip,
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EnumBackgroundCopyFiles_Reset,
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EnumBackgroundCopyFiles_Clone,
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EnumBackgroundCopyFiles_GetCount
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};
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HRESULT EnumBackgroundCopyFilesConstructor(BackgroundCopyJobImpl *job, IEnumBackgroundCopyFiles **enum_files)
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{
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EnumBackgroundCopyFilesImpl *This;
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BackgroundCopyFileImpl *file;
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ULONG i;
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TRACE("%p, %p)\n", job, enum_files);
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This = HeapAlloc(GetProcessHeap(), 0, sizeof *This);
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if (!This)
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return E_OUTOFMEMORY;
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This->IEnumBackgroundCopyFiles_iface.lpVtbl = &EnumBackgroundCopyFilesVtbl;
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This->ref = 1;
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/* Create array of files */
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This->indexFiles = 0;
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EnterCriticalSection(&job->cs);
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This->numFiles = list_count(&job->files);
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This->files = NULL;
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if (This->numFiles > 0)
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{
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This->files = HeapAlloc(GetProcessHeap(), 0,
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This->numFiles * sizeof This->files[0]);
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if (!This->files)
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{
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LeaveCriticalSection(&job->cs);
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HeapFree(GetProcessHeap(), 0, This);
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return E_OUTOFMEMORY;
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}
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}
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i = 0;
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LIST_FOR_EACH_ENTRY(file, &job->files, BackgroundCopyFileImpl, entryFromJob)
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{
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IBackgroundCopyFile2_AddRef(&file->IBackgroundCopyFile2_iface);
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This->files[i] = &file->IBackgroundCopyFile2_iface;
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++i;
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}
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LeaveCriticalSection(&job->cs);
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*enum_files = &This->IEnumBackgroundCopyFiles_iface;
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return S_OK;
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}
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