1166 lines
32 KiB
C
1166 lines
32 KiB
C
/******************************************************************************
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*
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* Global memory implementation of ILockBytes.
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*
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* Copyright 1999 Thuy Nguyen
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <assert.h>
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#include <string.h>
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "windef.h"
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#include "wine/winbase16.h"
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#include "objbase.h"
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#include "ole2.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "ifs.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ole);
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/******************************************************************************
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* HGLOBALLockBytesImpl definition.
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*
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* This class imlements the ILockBytes inteface and represents a byte array
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* object supported by an HGLOBAL pointer.
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*/
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struct HGLOBALLockBytesImpl
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{
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/*
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* Needs to be the first item in the stuct
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* since we want to cast this in an ILockBytes pointer
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*/
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ICOM_VFIELD(ILockBytes);
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/*
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* Reference count
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*/
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ULONG ref;
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/*
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* Support for the LockBytes object
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*/
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HGLOBAL supportHandle;
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/*
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* This flag is TRUE if the HGLOBAL is destroyed when the object
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* is finally released.
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*/
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BOOL deleteOnRelease;
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/*
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* Helper variable that contains the size of the byte array
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*/
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ULARGE_INTEGER byteArraySize;
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};
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typedef struct HGLOBALLockBytesImpl HGLOBALLockBytesImpl;
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/*
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* Method definition for the HGLOBALLockBytesImpl class.
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*/
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HGLOBALLockBytesImpl* HGLOBALLockBytesImpl_Construct(
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HGLOBAL hGlobal,
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BOOL fDeleteOnRelease);
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void HGLOBALLockBytesImpl_Destroy(HGLOBALLockBytesImpl* This);
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HRESULT WINAPI HGLOBALLockBytesImpl_QueryInterface(
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ILockBytes* iface,
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REFIID riid, /* [in] */
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void** ppvObject); /* [iid_is][out] */
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ULONG WINAPI HGLOBALLockBytesImpl_AddRef(
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ILockBytes* iface);
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ULONG WINAPI HGLOBALLockBytesImpl_Release(
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ILockBytes* iface);
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HRESULT WINAPI HGLOBALLockBytesImpl_ReadAt(
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ILockBytes* iface,
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ULARGE_INTEGER ulOffset, /* [in] */
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void* pv, /* [length_is][size_is][out] */
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ULONG cb, /* [in] */
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ULONG* pcbRead); /* [out] */
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HRESULT WINAPI HGLOBALLockBytesImpl_WriteAt(
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ILockBytes* iface,
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ULARGE_INTEGER ulOffset, /* [in] */
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const void* pv, /* [size_is][in] */
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ULONG cb, /* [in] */
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ULONG* pcbWritten); /* [out] */
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HRESULT WINAPI HGLOBALLockBytesImpl_Flush(
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ILockBytes* iface);
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HRESULT WINAPI HGLOBALLockBytesImpl_SetSize(
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ILockBytes* iface,
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ULARGE_INTEGER libNewSize); /* [in] */
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HRESULT WINAPI HGLOBALLockBytesImpl_LockRegion(
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ILockBytes* iface,
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ULARGE_INTEGER libOffset, /* [in] */
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ULARGE_INTEGER cb, /* [in] */
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DWORD dwLockType); /* [in] */
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HRESULT WINAPI HGLOBALLockBytesImpl_UnlockRegion(
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ILockBytes* iface,
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ULARGE_INTEGER libOffset, /* [in] */
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ULARGE_INTEGER cb, /* [in] */
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DWORD dwLockType); /* [in] */
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HRESULT WINAPI HGLOBALLockBytesImpl_Stat(
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ILockBytes* iface,
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STATSTG* pstatstg, /* [out] */
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DWORD grfStatFlag); /* [in] */
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/*
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* Virtual function table for the HGLOBALLockBytesImpl class.
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*/
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static ICOM_VTABLE(ILockBytes) HGLOBALLockBytesImpl_Vtbl =
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{
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ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
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HGLOBALLockBytesImpl_QueryInterface,
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HGLOBALLockBytesImpl_AddRef,
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HGLOBALLockBytesImpl_Release,
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HGLOBALLockBytesImpl_ReadAt,
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HGLOBALLockBytesImpl_WriteAt,
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HGLOBALLockBytesImpl_Flush,
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HGLOBALLockBytesImpl_SetSize,
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HGLOBALLockBytesImpl_LockRegion,
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HGLOBALLockBytesImpl_UnlockRegion,
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HGLOBALLockBytesImpl_Stat,
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};
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/******************************************************************************
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* CreateILockBytesOnHGlobal [OLE32.57]
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*/
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HRESULT WINAPI CreateILockBytesOnHGlobal(HGLOBAL hGlobal,
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BOOL fDeleteOnRelease,
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LPLOCKBYTES* ppLkbyt)
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{
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HGLOBALLockBytesImpl* newLockBytes;
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newLockBytes = HGLOBALLockBytesImpl_Construct(hGlobal, fDeleteOnRelease);
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if (newLockBytes != NULL)
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{
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return IUnknown_QueryInterface((IUnknown*)newLockBytes,
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&IID_ILockBytes,
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(void**)ppLkbyt);
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}
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return E_OUTOFMEMORY;
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}
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/******************************************************************************
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* GetHGlobalFromILockBytes [OLE32.70]
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*/
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HRESULT WINAPI GetHGlobalFromILockBytes(ILockBytes* plkbyt, HGLOBAL* phglobal)
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{
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HGLOBALLockBytesImpl* const pMemLockBytes = (HGLOBALLockBytesImpl*)plkbyt;
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STATSTG stbuf;
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HRESULT hres;
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ULARGE_INTEGER start;
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ULONG xread;
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*phglobal = 0;
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if (pMemLockBytes->lpVtbl == &HGLOBALLockBytesImpl_Vtbl) {
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*phglobal = pMemLockBytes->supportHandle;
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if (*phglobal == 0)
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return E_INVALIDARG;
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return S_OK;
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}
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/* It is not our lockbytes implementation, so use a more generic way */
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hres = ILockBytes_Stat(plkbyt,&stbuf,0);
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if (hres != S_OK) {
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ERR("Cannot ILockBytes_Stat, %lx\n",hres);
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return hres;
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}
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FIXME("cbSize is %ld\n",stbuf.cbSize.s.LowPart);
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*phglobal = GlobalAlloc( GMEM_MOVEABLE|GMEM_SHARE, stbuf.cbSize.s.LowPart);
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if (!*phglobal)
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return E_INVALIDARG;
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memset(&start,0,sizeof(start));
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hres = ILockBytes_ReadAt(plkbyt, start, GlobalLock(*phglobal), stbuf.cbSize.s.LowPart, &xread);
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GlobalUnlock(*phglobal);
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if (hres != S_OK) {
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FIXME("%p->ReadAt failed with %lx\n",plkbyt,hres);
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return hres;
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}
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if (stbuf.cbSize.s.LowPart != xread) {
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FIXME("Read size is not requested size %ld vs %ld?\n",stbuf.cbSize.s.LowPart, xread);
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}
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return S_OK;
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}
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/******************************************************************************
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*
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* HGLOBALLockBytesImpl implementation
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*
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*/
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/******************************************************************************
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* This is the constructor for the HGLOBALLockBytesImpl class.
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*
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* Params:
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* hGlobal - Handle that will support the stream. can be NULL.
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* fDeleteOnRelease - Flag set to TRUE if the HGLOBAL will be released
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* when the IStream object is destroyed.
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*/
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HGLOBALLockBytesImpl* HGLOBALLockBytesImpl_Construct(HGLOBAL hGlobal,
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BOOL fDeleteOnRelease)
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{
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HGLOBALLockBytesImpl* newLockBytes;
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newLockBytes = HeapAlloc(GetProcessHeap(), 0, sizeof(HGLOBALLockBytesImpl));
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if (newLockBytes!=0)
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{
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/*
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* Set up the virtual function table and reference count.
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*/
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newLockBytes->lpVtbl = &HGLOBALLockBytesImpl_Vtbl;
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newLockBytes->ref = 0;
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/*
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* Initialize the support.
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*/
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newLockBytes->supportHandle = hGlobal;
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newLockBytes->deleteOnRelease = fDeleteOnRelease;
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/*
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* This method will allocate a handle if one is not supplied.
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*/
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if (newLockBytes->supportHandle == 0)
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{
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newLockBytes->supportHandle = GlobalAlloc(GMEM_MOVEABLE |
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GMEM_NODISCARD,
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0);
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}
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/*
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* Initialize the size of the array to the size of the handle.
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*/
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newLockBytes->byteArraySize.s.HighPart = 0;
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newLockBytes->byteArraySize.s.LowPart = GlobalSize(
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newLockBytes->supportHandle);
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}
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return newLockBytes;
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}
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/******************************************************************************
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* This is the destructor of the HGLOBALStreamImpl class.
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*
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* This method will clean-up all the resources used-up by the given
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* HGLOBALLockBytesImpl class. The pointer passed-in to this function will be
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* freed and will not be valid anymore.
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*/
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void HGLOBALLockBytesImpl_Destroy(HGLOBALLockBytesImpl* This)
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{
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/*
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* Release the HGlobal if the constructor asked for that.
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*/
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if (This->deleteOnRelease)
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{
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GlobalFree(This->supportHandle);
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This->supportHandle = 0;
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}
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/*
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* Finally, free the memory used-up by the class.
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*/
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HeapFree(GetProcessHeap(), 0, This);
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}
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/******************************************************************************
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* This implements the IUnknown method QueryInterface for this
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* class
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*/
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HRESULT WINAPI HGLOBALLockBytesImpl_QueryInterface(
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ILockBytes* iface,
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REFIID riid, /* [in] */
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void** ppvObject) /* [iid_is][out] */
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{
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HGLOBALLockBytesImpl* const This=(HGLOBALLockBytesImpl*)iface;
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/*
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* Perform a sanity check on the parameters.
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*/
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if (ppvObject==0)
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return E_INVALIDARG;
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/*
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* Initialize the return parameter.
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*/
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*ppvObject = 0;
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/*
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* Compare the riid with the interface IDs implemented by this object.
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*/
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if (memcmp(&IID_IUnknown, riid, sizeof(IID_IUnknown)) == 0)
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{
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*ppvObject = (ILockBytes*)This;
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}
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else if (memcmp(&IID_ILockBytes, riid, sizeof(IID_ILockBytes)) == 0)
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{
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*ppvObject = (ILockBytes*)This;
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}
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/*
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* Check that we obtained an interface.
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*/
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if ((*ppvObject)==0)
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return E_NOINTERFACE;
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/*
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* Query Interface always increases the reference count by one when it is
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* successful
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*/
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HGLOBALLockBytesImpl_AddRef(iface);
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return S_OK;
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}
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/******************************************************************************
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* This implements the IUnknown method AddRef for this
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* class
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*/
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ULONG WINAPI HGLOBALLockBytesImpl_AddRef(ILockBytes* iface)
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{
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HGLOBALLockBytesImpl* const This=(HGLOBALLockBytesImpl*)iface;
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This->ref++;
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return This->ref;
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}
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/******************************************************************************
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* This implements the IUnknown method Release for this
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* class
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*/
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ULONG WINAPI HGLOBALLockBytesImpl_Release(ILockBytes* iface)
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{
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HGLOBALLockBytesImpl* const This=(HGLOBALLockBytesImpl*)iface;
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ULONG newRef;
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This->ref--;
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newRef = This->ref;
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/*
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* If the reference count goes down to 0, perform suicide.
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*/
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if (newRef==0)
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{
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HGLOBALLockBytesImpl_Destroy(This);
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}
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return newRef;
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}
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/******************************************************************************
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* This method is part of the ILockBytes interface.
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*
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* It reads a block of information from the byte array at the specified
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* offset.
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*
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* See the documentation of ILockBytes for more info.
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*/
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HRESULT WINAPI HGLOBALLockBytesImpl_ReadAt(
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ILockBytes* iface,
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ULARGE_INTEGER ulOffset, /* [in] */
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void* pv, /* [length_is][size_is][out] */
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ULONG cb, /* [in] */
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ULONG* pcbRead) /* [out] */
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{
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HGLOBALLockBytesImpl* const This=(HGLOBALLockBytesImpl*)iface;
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void* supportBuffer;
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ULONG bytesReadBuffer = 0;
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ULONG bytesToReadFromBuffer;
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/*
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* If the caller is not interested in the number of bytes read,
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* we use another buffer to avoid "if" statements in the code.
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*/
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if (pcbRead == 0)
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pcbRead = &bytesReadBuffer;
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/*
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* Make sure the offset is valid.
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*/
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if (ulOffset.s.LowPart > This->byteArraySize.s.LowPart)
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return E_FAIL;
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/*
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* Using the known size of the array, calculate the number of bytes
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* to read.
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*/
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bytesToReadFromBuffer = min(This->byteArraySize.s.LowPart -
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ulOffset.s.LowPart, cb);
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/*
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* Lock the buffer in position and copy the data.
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*/
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supportBuffer = GlobalLock(This->supportHandle);
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memcpy(pv,
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(char *) supportBuffer + ulOffset.s.LowPart,
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bytesToReadFromBuffer);
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/*
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* Return the number of bytes read.
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*/
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*pcbRead = bytesToReadFromBuffer;
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/*
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* Cleanup
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*/
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GlobalUnlock(This->supportHandle);
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/*
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* The function returns S_OK if the specified number of bytes were read
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* or the end of the array was reached.
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* It returns STG_E_READFAULT if the number of bytes to read does not equal
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* the number of bytes actually read.
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*/
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if(*pcbRead == cb)
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return S_OK;
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return STG_E_READFAULT;
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}
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/******************************************************************************
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* This method is part of the ILockBytes interface.
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*
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* It writes the specified bytes at the specified offset.
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* position. If the array is too small, it will be resized.
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*
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* See the documentation of ILockBytes for more info.
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*/
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HRESULT WINAPI HGLOBALLockBytesImpl_WriteAt(
|
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ILockBytes* iface,
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ULARGE_INTEGER ulOffset, /* [in] */
|
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const void* pv, /* [size_is][in] */
|
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ULONG cb, /* [in] */
|
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ULONG* pcbWritten) /* [out] */
|
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{
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HGLOBALLockBytesImpl* const This=(HGLOBALLockBytesImpl*)iface;
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void* supportBuffer;
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ULARGE_INTEGER newSize;
|
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ULONG bytesWritten = 0;
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|
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/*
|
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* If the caller is not interested in the number of bytes written,
|
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* we use another buffer to avoid "if" statements in the code.
|
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*/
|
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if (pcbWritten == 0)
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pcbWritten = &bytesWritten;
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|
|
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if (cb == 0)
|
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{
|
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return S_OK;
|
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}
|
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else
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{
|
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newSize.s.HighPart = 0;
|
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newSize.s.LowPart = ulOffset.s.LowPart + cb;
|
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}
|
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|
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/*
|
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* Verify if we need to grow the stream
|
|
*/
|
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if (newSize.s.LowPart > This->byteArraySize.s.LowPart)
|
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{
|
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/* grow stream */
|
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if (HGLOBALLockBytesImpl_SetSize(iface, newSize) == STG_E_MEDIUMFULL)
|
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return STG_E_MEDIUMFULL;
|
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}
|
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|
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/*
|
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* Lock the buffer in position and copy the data.
|
|
*/
|
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supportBuffer = GlobalLock(This->supportHandle);
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|
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memcpy((char *) supportBuffer + ulOffset.s.LowPart, pv, cb);
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|
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/*
|
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* Return the number of bytes written.
|
|
*/
|
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*pcbWritten = cb;
|
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|
|
/*
|
|
* Cleanup
|
|
*/
|
|
GlobalUnlock(This->supportHandle);
|
|
|
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return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl_Flush(ILockBytes* iface)
|
|
{
|
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return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* It will change the size of the byte array.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl_SetSize(
|
|
ILockBytes* iface,
|
|
ULARGE_INTEGER libNewSize) /* [in] */
|
|
{
|
|
HGLOBALLockBytesImpl* const This=(HGLOBALLockBytesImpl*)iface;
|
|
|
|
/*
|
|
* As documented.
|
|
*/
|
|
if (libNewSize.s.HighPart != 0)
|
|
return STG_E_INVALIDFUNCTION;
|
|
|
|
if (This->byteArraySize.s.LowPart == libNewSize.s.LowPart)
|
|
return S_OK;
|
|
|
|
/*
|
|
* Re allocate the HGlobal to fit the new size of the stream.
|
|
*/
|
|
This->supportHandle = GlobalReAlloc(This->supportHandle,
|
|
libNewSize.s.LowPart,
|
|
0);
|
|
|
|
if (This->supportHandle == 0)
|
|
return STG_E_MEDIUMFULL;
|
|
|
|
This->byteArraySize.s.LowPart = libNewSize.s.LowPart;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* The global memory implementation of ILockBytes does not support locking.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl_LockRegion(
|
|
ILockBytes* iface,
|
|
ULARGE_INTEGER libOffset, /* [in] */
|
|
ULARGE_INTEGER cb, /* [in] */
|
|
DWORD dwLockType) /* [in] */
|
|
{
|
|
return STG_E_INVALIDFUNCTION;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* The global memory implementation of ILockBytes does not support locking.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl_UnlockRegion(
|
|
ILockBytes* iface,
|
|
ULARGE_INTEGER libOffset, /* [in] */
|
|
ULARGE_INTEGER cb, /* [in] */
|
|
DWORD dwLockType) /* [in] */
|
|
{
|
|
return STG_E_INVALIDFUNCTION;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* This method returns information about the current
|
|
* byte array object.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl_Stat(
|
|
ILockBytes* iface,
|
|
STATSTG* pstatstg, /* [out] */
|
|
DWORD grfStatFlag) /* [in] */
|
|
{
|
|
HGLOBALLockBytesImpl* const This=(HGLOBALLockBytesImpl*)iface;
|
|
|
|
memset(pstatstg, 0, sizeof(STATSTG));
|
|
|
|
pstatstg->pwcsName = NULL;
|
|
pstatstg->type = STGTY_LOCKBYTES;
|
|
pstatstg->cbSize = This->byteArraySize;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* HGLOBALLockBytesImpl16 definition.
|
|
*
|
|
* This class imlements the ILockBytes inteface and represents a byte array
|
|
* object supported by an HGLOBAL pointer.
|
|
*/
|
|
struct HGLOBALLockBytesImpl16
|
|
{
|
|
/*
|
|
* Needs to be the first item in the stuct
|
|
* since we want to cast this in an ILockBytes pointer
|
|
*/
|
|
ICOM_VFIELD(ILockBytes16);
|
|
ULONG ref;
|
|
|
|
/*
|
|
* Support for the LockBytes object
|
|
*/
|
|
HGLOBAL16 supportHandle;
|
|
|
|
/*
|
|
* This flag is TRUE if the HGLOBAL is destroyed when the object
|
|
* is finally released.
|
|
*/
|
|
BOOL deleteOnRelease;
|
|
/*
|
|
* Helper variable that contains the size of the byte array
|
|
*/
|
|
ULARGE_INTEGER byteArraySize;
|
|
};
|
|
|
|
typedef struct HGLOBALLockBytesImpl16 HGLOBALLockBytesImpl16;
|
|
|
|
HGLOBALLockBytesImpl16* HGLOBALLockBytesImpl16_Construct(
|
|
HGLOBAL16 hGlobal,
|
|
BOOL16 fDeleteOnRelease);
|
|
|
|
void HGLOBALLockBytesImpl16_Destroy(HGLOBALLockBytesImpl16* This);
|
|
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_QueryInterface(
|
|
ILockBytes16* iface,
|
|
REFIID riid, /* [in] */
|
|
void** ppvObject); /* [iid_is][out] */
|
|
|
|
ULONG WINAPI HGLOBALLockBytesImpl16_AddRef(
|
|
ILockBytes16* iface);
|
|
|
|
ULONG WINAPI HGLOBALLockBytesImpl16_Release(
|
|
ILockBytes16* iface);
|
|
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_ReadAt(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER ulOffset, /* [in] */
|
|
void* pv, /* [length_is][size_is][out] */
|
|
ULONG cb, /* [in] */
|
|
ULONG* pcbRead); /* [out] */
|
|
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_WriteAt(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER ulOffset, /* [in] */
|
|
const void* pv, /* [size_is][in] */
|
|
ULONG cb, /* [in] */
|
|
ULONG* pcbWritten); /* [out] */
|
|
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_Flush(
|
|
ILockBytes16* iface);
|
|
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_SetSize(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER libNewSize); /* [in] */
|
|
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_LockRegion(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER libOffset, /* [in] */
|
|
ULARGE_INTEGER cb, /* [in] */
|
|
DWORD dwLockType); /* [in] */
|
|
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_UnlockRegion(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER libOffset, /* [in] */
|
|
ULARGE_INTEGER cb, /* [in] */
|
|
DWORD dwLockType); /* [in] */
|
|
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_Stat(
|
|
ILockBytes16* iface,
|
|
STATSTG16* pstatstg, /* [out] */
|
|
DWORD grfStatFlag); /* [in] */
|
|
|
|
/******************************************************************************
|
|
*
|
|
* HGLOBALLockBytesImpl16 implementation
|
|
*
|
|
*/
|
|
|
|
/******************************************************************************
|
|
* This is the constructor for the HGLOBALLockBytesImpl16 class.
|
|
*
|
|
* Params:
|
|
* hGlobal - Handle that will support the stream. can be NULL.
|
|
* fDeleteOnRelease - Flag set to TRUE if the HGLOBAL16 will be released
|
|
* when the IStream object is destroyed.
|
|
*/
|
|
HGLOBALLockBytesImpl16*
|
|
HGLOBALLockBytesImpl16_Construct(HGLOBAL16 hGlobal,
|
|
BOOL16 fDeleteOnRelease)
|
|
{
|
|
HGLOBALLockBytesImpl16* newLockBytes;
|
|
|
|
static ICOM_VTABLE(ILockBytes16) vt16;
|
|
static SEGPTR msegvt16;
|
|
HMODULE16 hcomp = GetModuleHandle16("OLE2");
|
|
|
|
|
|
TRACE("(%x,%d)\n",hGlobal,fDeleteOnRelease);
|
|
newLockBytes = HeapAlloc(GetProcessHeap(), 0, sizeof(HGLOBALLockBytesImpl16));
|
|
if (newLockBytes == NULL)
|
|
return NULL;
|
|
|
|
/*
|
|
* Set up the virtual function table and reference count.
|
|
*/
|
|
if (!msegvt16)
|
|
{
|
|
#define VTENT(x) vt16.x = (void*)GetProcAddress16(hcomp,"HGLOBALLockBytesImpl16_"#x);assert(vt16.x)
|
|
VTENT(QueryInterface);
|
|
VTENT(AddRef);
|
|
VTENT(Release);
|
|
VTENT(ReadAt);
|
|
VTENT(WriteAt);
|
|
VTENT(Flush);
|
|
VTENT(SetSize);
|
|
VTENT(LockRegion);
|
|
VTENT(UnlockRegion);
|
|
#undef VTENT
|
|
msegvt16 = MapLS( &vt16 );
|
|
}
|
|
newLockBytes->lpVtbl = (ICOM_VTABLE(ILockBytes16)*)msegvt16;
|
|
newLockBytes->ref = 0;
|
|
/*
|
|
* Initialize the support.
|
|
*/
|
|
newLockBytes->supportHandle = hGlobal;
|
|
newLockBytes->deleteOnRelease = fDeleteOnRelease;
|
|
|
|
/*
|
|
* This method will allocate a handle if one is not supplied.
|
|
*/
|
|
if (newLockBytes->supportHandle == 0)
|
|
newLockBytes->supportHandle = GlobalAlloc16(GMEM_MOVEABLE | GMEM_NODISCARD, 0);
|
|
|
|
/*
|
|
* Initialize the size of the array to the size of the handle.
|
|
*/
|
|
newLockBytes->byteArraySize.s.HighPart = 0;
|
|
newLockBytes->byteArraySize.s.LowPart = GlobalSize16(
|
|
newLockBytes->supportHandle);
|
|
|
|
return (HGLOBALLockBytesImpl16*)MapLS(newLockBytes);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This is the destructor of the HGLOBALStreamImpl class.
|
|
*
|
|
* This method will clean-up all the resources used-up by the given
|
|
* HGLOBALLockBytesImpl16 class. The pointer passed-in to this function will be
|
|
* freed and will not be valid anymore.
|
|
*/
|
|
void HGLOBALLockBytesImpl16_Destroy(HGLOBALLockBytesImpl16* This)
|
|
{
|
|
TRACE("()\n");
|
|
/*
|
|
* Release the HGlobal if the constructor asked for that.
|
|
*/
|
|
if (This->deleteOnRelease)
|
|
{
|
|
GlobalFree16(This->supportHandle);
|
|
This->supportHandle = 0;
|
|
}
|
|
|
|
/*
|
|
* Finally, free the memory used-up by the class.
|
|
*/
|
|
HeapFree(GetProcessHeap(), 0, This);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This implements the IUnknown method QueryInterface for this
|
|
* class
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_QueryInterface(
|
|
ILockBytes16* iface, /* [in] SEGPTR */
|
|
REFIID riid, /* [in] */
|
|
void** ppvObject) /* [iid_is][out] (ptr to SEGPTR!) */
|
|
{
|
|
HGLOBALLockBytesImpl16* const This=(HGLOBALLockBytesImpl16*)MapSL((SEGPTR)iface);
|
|
|
|
TRACE("(%p,%s,%p)\n",iface,debugstr_guid(riid),ppvObject);
|
|
/*
|
|
* Perform a sanity check on the parameters.
|
|
*/
|
|
if (ppvObject==0)
|
|
return E_INVALIDARG;
|
|
|
|
/*
|
|
* Initialize the return parameter.
|
|
*/
|
|
*ppvObject = 0;
|
|
/*
|
|
* Compare the riid with the interface IDs implemented by this object.
|
|
*/
|
|
if ( !memcmp(&IID_IUnknown, riid, sizeof(IID_IUnknown)) ||
|
|
!memcmp(&IID_ILockBytes, riid, sizeof(IID_ILockBytes))
|
|
)
|
|
*ppvObject = (void*)iface;
|
|
|
|
/*
|
|
* Check that we obtained an interface.
|
|
*/
|
|
if ((*ppvObject)==0)
|
|
return E_NOINTERFACE;
|
|
|
|
/*
|
|
* Query Interface always increases the reference count by one when it is
|
|
* successful
|
|
*/
|
|
HGLOBALLockBytesImpl16_AddRef((ILockBytes16*)This);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This implements the IUnknown method AddRef for this
|
|
* class
|
|
*/
|
|
ULONG WINAPI HGLOBALLockBytesImpl16_AddRef(ILockBytes16* iface)
|
|
{
|
|
HGLOBALLockBytesImpl16* const This=(HGLOBALLockBytesImpl16*)iface;
|
|
|
|
TRACE("(%p)\n",This);
|
|
|
|
This->ref++;
|
|
|
|
return This->ref;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This implements the IUnknown method Release for this
|
|
* class
|
|
*/
|
|
ULONG WINAPI HGLOBALLockBytesImpl16_Release(ILockBytes16* iface)
|
|
{
|
|
HGLOBALLockBytesImpl16* const This=(HGLOBALLockBytesImpl16*)iface;
|
|
|
|
ULONG newRef;
|
|
TRACE("(%p)\n",This);
|
|
|
|
This->ref--;
|
|
|
|
newRef = This->ref;
|
|
|
|
/*
|
|
* If the reference count goes down to 0, perform suicide.
|
|
*/
|
|
if (newRef==0)
|
|
HGLOBALLockBytesImpl16_Destroy(This);
|
|
return newRef;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* It reads a block of information from the byte array at the specified
|
|
* offset.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_ReadAt(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER ulOffset, /* [in] */
|
|
void* pv, /* [length_is][size_is][out] */
|
|
ULONG cb, /* [in] */
|
|
ULONG* pcbRead) /* [out] */
|
|
{
|
|
HGLOBALLockBytesImpl16* const This=(HGLOBALLockBytesImpl16*)iface;
|
|
|
|
void* supportBuffer;
|
|
ULONG bytesReadBuffer = 0;
|
|
ULONG bytesToReadFromBuffer;
|
|
|
|
TRACE("(%p,%ld,%p,%ld,%p)\n",This,ulOffset.s.LowPart,pv,cb,pcbRead);
|
|
/*
|
|
* If the caller is not interested in the number of bytes read,
|
|
* we use another buffer to avoid "if" statements in the code.
|
|
*/
|
|
if (pcbRead == 0)
|
|
pcbRead = &bytesReadBuffer;
|
|
|
|
/*
|
|
* Make sure the offset is valid.
|
|
*/
|
|
if (ulOffset.s.LowPart > This->byteArraySize.s.LowPart)
|
|
return E_FAIL;
|
|
|
|
/*
|
|
* Using the known size of the array, calculate the number of bytes
|
|
* to read.
|
|
*/
|
|
bytesToReadFromBuffer = min(This->byteArraySize.s.LowPart -
|
|
ulOffset.s.LowPart, cb);
|
|
|
|
/*
|
|
* Lock the buffer in position and copy the data.
|
|
*/
|
|
supportBuffer = GlobalLock16(This->supportHandle);
|
|
|
|
memcpy(pv,
|
|
(char *) supportBuffer + ulOffset.s.LowPart,
|
|
bytesToReadFromBuffer);
|
|
|
|
/*
|
|
* Return the number of bytes read.
|
|
*/
|
|
*pcbRead = bytesToReadFromBuffer;
|
|
|
|
/*
|
|
* Cleanup
|
|
*/
|
|
GlobalUnlock16(This->supportHandle);
|
|
|
|
/*
|
|
* The function returns S_OK if the specified number of bytes were read
|
|
* or the end of the array was reached.
|
|
* It returns STG_E_READFAULT if the number of bytes to read does not equal
|
|
* the number of bytes actually read.
|
|
*/
|
|
if(*pcbRead == cb)
|
|
return S_OK;
|
|
|
|
return STG_E_READFAULT;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* It writes the specified bytes at the specified offset.
|
|
* position. If the array is too small, it will be resized.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_WriteAt(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER ulOffset, /* [in] */
|
|
const void* pv, /* [size_is][in] */
|
|
ULONG cb, /* [in] */
|
|
ULONG* pcbWritten) /* [out] */
|
|
{
|
|
HGLOBALLockBytesImpl16* const This=(HGLOBALLockBytesImpl16*)iface;
|
|
|
|
void* supportBuffer;
|
|
ULARGE_INTEGER newSize;
|
|
ULONG bytesWritten = 0;
|
|
|
|
TRACE("(%p,%ld,%p,%ld,%p)\n",This,ulOffset.s.LowPart,pv,cb,pcbWritten);
|
|
/*
|
|
* If the caller is not interested in the number of bytes written,
|
|
* we use another buffer to avoid "if" statements in the code.
|
|
*/
|
|
if (pcbWritten == 0)
|
|
pcbWritten = &bytesWritten;
|
|
|
|
if (cb == 0)
|
|
return S_OK;
|
|
|
|
newSize.s.HighPart = 0;
|
|
newSize.s.LowPart = ulOffset.s.LowPart + cb;
|
|
|
|
/*
|
|
* Verify if we need to grow the stream
|
|
*/
|
|
if (newSize.s.LowPart > This->byteArraySize.s.LowPart)
|
|
{
|
|
/* grow stream */
|
|
if (HGLOBALLockBytesImpl16_SetSize(iface, newSize) == STG_E_MEDIUMFULL)
|
|
return STG_E_MEDIUMFULL;
|
|
}
|
|
|
|
/*
|
|
* Lock the buffer in position and copy the data.
|
|
*/
|
|
supportBuffer = GlobalLock16(This->supportHandle);
|
|
|
|
memcpy((char *) supportBuffer + ulOffset.s.LowPart, pv, cb);
|
|
|
|
/*
|
|
* Return the number of bytes written.
|
|
*/
|
|
*pcbWritten = cb;
|
|
|
|
/*
|
|
* Cleanup
|
|
*/
|
|
GlobalUnlock16(This->supportHandle);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_Flush(ILockBytes16* iface)
|
|
{
|
|
TRACE("(%p)\n",iface);
|
|
return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* It will change the size of the byte array.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_SetSize(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER libNewSize) /* [in] */
|
|
{
|
|
HGLOBALLockBytesImpl16* const This=(HGLOBALLockBytesImpl16*)iface;
|
|
|
|
TRACE("(%p,%ld)\n",This,libNewSize.s.LowPart);
|
|
/*
|
|
* As documented.
|
|
*/
|
|
if (libNewSize.s.HighPart != 0)
|
|
return STG_E_INVALIDFUNCTION;
|
|
|
|
if (This->byteArraySize.s.LowPart == libNewSize.s.LowPart)
|
|
return S_OK;
|
|
|
|
/*
|
|
* Re allocate the HGlobal to fit the new size of the stream.
|
|
*/
|
|
This->supportHandle = GlobalReAlloc16(This->supportHandle,
|
|
libNewSize.s.LowPart,
|
|
0);
|
|
|
|
if (This->supportHandle == 0)
|
|
return STG_E_MEDIUMFULL;
|
|
|
|
This->byteArraySize.s.LowPart = libNewSize.s.LowPart;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* The global memory implementation of ILockBytes does not support locking.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_LockRegion(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER libOffset, /* [in] */
|
|
ULARGE_INTEGER cb, /* [in] */
|
|
DWORD dwLockType) /* [in] */
|
|
{
|
|
return STG_E_INVALIDFUNCTION;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* The global memory implementation of ILockBytes does not support locking.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_UnlockRegion(
|
|
ILockBytes16* iface,
|
|
ULARGE_INTEGER libOffset, /* [in] */
|
|
ULARGE_INTEGER cb, /* [in] */
|
|
DWORD dwLockType) /* [in] */
|
|
{
|
|
return STG_E_INVALIDFUNCTION;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* This method is part of the ILockBytes interface.
|
|
*
|
|
* This method returns information about the current
|
|
* byte array object.
|
|
*
|
|
* See the documentation of ILockBytes for more info.
|
|
*/
|
|
HRESULT WINAPI HGLOBALLockBytesImpl16_Stat(
|
|
ILockBytes16*iface,
|
|
STATSTG16* pstatstg, /* [out] */
|
|
DWORD grfStatFlag) /* [in] */
|
|
{
|
|
HGLOBALLockBytesImpl16* const This=(HGLOBALLockBytesImpl16*)iface;
|
|
|
|
memset(pstatstg, 0, sizeof(STATSTG16));
|
|
|
|
pstatstg->pwcsName = NULL;
|
|
pstatstg->type = STGTY_LOCKBYTES;
|
|
pstatstg->cbSize = This->byteArraySize;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* CreateILockBytesOnHGlobal [OLE2.54]
|
|
*
|
|
* Creates an ILockBytes interface for a HGLOBAL handle.
|
|
*
|
|
* Params:
|
|
* hGlobal the global handle (16bit)
|
|
* fDeleteOnRelease delete handle on release.
|
|
* ppLkbyt pointer to ILockBytes interface.
|
|
*
|
|
* Returns:
|
|
* Staddard OLE error return codes.
|
|
*
|
|
*/
|
|
HRESULT WINAPI CreateILockBytesOnHGlobal16(HGLOBAL16 hGlobal,
|
|
BOOL16 fDeleteOnRelease,
|
|
/*SEGPTR**/ LPLOCKBYTES16* ppLkbyt)
|
|
{
|
|
HGLOBALLockBytesImpl16* newLockBytes; /* SEGPTR */
|
|
|
|
newLockBytes = HGLOBALLockBytesImpl16_Construct(hGlobal, fDeleteOnRelease);
|
|
|
|
if (newLockBytes != NULL)
|
|
return HGLOBALLockBytesImpl16_QueryInterface((ILockBytes16*)newLockBytes,
|
|
&IID_ILockBytes,
|
|
(void**)ppLkbyt);
|
|
return E_OUTOFMEMORY;
|
|
}
|